Paleo-Indians migrated from Eurasia to what is now the U.S. mainland at least 15,000 years ago, with European colonization beginning in the 16th century. The United States emerged from 13 British colonies along the East Coast. Disputes between Great Britain and the colonies led to the American Revolution. On July 4, 1776, as the colonies were fighting Great Britain in the American Revolutionary War, delegates from the 13 colonies unanimously adopted the Declaration of Independence. The war ended in 1783 with recognition of the independence of the United States by the Kingdom of Great Britain, and was the first successful war of independence against a European colonial empire.Greene, Jack P.; Pole, J.R., eds. (2008). A Companion to the American Revolution. pp. 352–361.
The country's constitution was adopted on September 17, 1787, and ratified by the states in 1788. The first ten amendments, collectively named the Bill of Rights, were ratified in 1791 and designed to guarantee many fundamental civil liberties.
Driven by the doctrine of Manifest Destiny, the United States embarked on a vigorous expansion across North America throughout the 19th century. This involved displacing American Indian tribes, acquiring new territories, and gradually admitting new states, until by 1848 the nation spanned the continent. ξ6 During the second half of the 19th century, the American Civil War ended legal slavery in the country. ξ7 By the end of that century, the United States extended into the Pacific Ocean, ξ8 and its economy, driven in large part by the Industrial Revolution, began to soar. The Spanish–American War and confirmed the country's status as a global military power. The United States emerged from as a global superpower, the first country to develop nuclear weapons, the only country to use them in war, and a permanent member of the United Nations Security Council. The end of the Cold War and the dissolution of the Soviet Union in 1991 left the United States as the world's sole superpower. ξ9
The United States is a developed country and has the world's largest national economy by nominal and real GDP, benefiting from an abundance of and high worker productivity. While the U.S. economy is considered post-industrial, the country continues to be one of the world's largest manufacturers. Accounting for 34% of global military spending and 23% of world GDP, it is the world's foremost military and economic power, a prominent political and cultural force, and a leader in scientific research and technological innovations.
The first known publication of the phrase "United States of America" was in an anonymous essay in The Virginia Gazette newspaper in Williamsburg, Virginia, on April 6, 1776. In June 1776, Thomas Jefferson wrote the phrase "UNITED STATES OF AMERICA" in all capitalized letters in the headline of his "original Rough draught" of the Declaration of Independence.DeLear, Byron (August 16, 2012). "Who coined the name 'United States of America'? Mystery gets new twist." Christian Science Monitor (Boston, MA). In the final Fourth of July version of the Declaration, the title was changed to read, "The unanimous Declaration of the thirteen united States of America". In 1777 the Articles of Confederation announced, "The Stile of this Confederacy shall be 'The United States of America. ξ15 The preamble of the Constitution states "...establish this Constitution for the United States of America."
The short form "United States" is also standard. Other common forms are the "U.S.", the "USA", and "America". Colloquial names are the "U.S. of A." and, internationally, the "States". "Columbia", a name popular in poetry and songs of the late 1700s, derives its origin from Christopher Columbus; it appears in the name "District of Columbia". ξ16 In non-English languages, the name is frequently the translation of either the "United States" or "United States of America", and colloquially as "America". In addition, an abbreviation (e.g. USA) is sometimes used.For example, the U.S. embassy in Spain calls itself the embassy of the "Estados Unidos", literally the words "states" and "united", and also uses the initials "EE.UU.", the doubled letters implying plural use in Spanish  Elsewhere on the site "Estados Unidos de América" is used 
The phrase "United States" was originally plural, a description of a collection of independent states—e.g., "the United States are"—including in the Thirteenth Amendment to the United States Constitution, ratified in 1865. The singular form—e.g., "the United States is"— became popular after the end of the American Civil War. The singular form is now standard; the plural form is retained in the idiom "these United States". The difference is more significant than usage; it is a difference between a collection of states and a unit.G. H. Emerson, The Universalist Quarterly and General Review, Vol. 28 (Jan. 1891), p. 49, quoted in Zimmer paper above.
A citizen of the United States is an "American". "United States", "American" and "U.S." refer to the country adjectivally ("American values", "U.S. forces"). "American" rarely refers to subjects not connected with the United States.Wilson, Kenneth G. (1993). The Columbia Guide to Standard American English. New York: Columbia University Press, pp. 27–28. ISBN 0-231-06989-8.
In the early days of colonization many European settlers were subject to food shortages, disease, and attacks from Native Americans. Native Americans were also often at war with neighboring tribes and allied with Europeans in their colonial wars.Juergens, 2011, p. 69 At the same time, however, many natives and settlers came to depend on each other. Settlers traded for food and animal pelts, natives for guns, ammunition and other European wares.Ripper, 2008 p. 6 Natives taught many settlers where, when and how to cultivate corn, beans and squash. European missionaries and others felt it was important to "civilize" the Indians and urged them to adopt European agricultural techniques and lifestyles.Ripper, 2008 p. 5Calloway, 1998, p. 55
Most settlers in every colony were small farmers, but other industries developed within a few decades as varied as the settlements. Cash crops included tobacco, rice and wheat. Extraction industries grew up in furs, fishing and lumber. Manufacturers produced rum and ships, and by the late colonial period Americans were producing one-seventh of the world's iron supply.Walton, 2009, chapter 3 Cities eventually dotted the coast to support local economies and serve as trade hubs. English colonists were supplemented by waves of Scotch-Irish and other groups. As coastal land grew more expensive freed pushed further west.Lemon, 1987
Slave cultivation of cash crops began with the Spanish in the 1500s, and was adopted by the English, but life expectancy was much higher in North America because of less disease and better food and treatment, leading to a rapid increase in the numbers of slaves.Clingan, 2000, p. 13Tadman, 2000, p. 1534Schneider, 2007, p. 484 Colonial society was largely divided over the religious and moral implications of slavery and colonies passed acts for and against the practice.Lien, 1913, p. 522Davis, 1996, p. 7 But by the turn of the 18th century, African slaves were replacing indentured servants for cash crop labor, especially in southern regions.Quirk, 2011, p. 195
With the British colonization of Georgia in 1732, the 13 colonies that would become the United States of America were established. ξ19 All had local governments with elections open to most free men, with a growing devotion to the ancient rights of Englishmen and a sense of self-government stimulating support for republicanism. ξ20 With extremely high birth rates, low death rates, and steady settlement, the colonial population grew rapidly. Relatively small Native American populations were eclipsed.Walton, 2009, pp. 38–39 The movement of the 1730s and 1740s known as the Great Awakening fueled interest in both religion and religious liberty.Foner, Eric. of American freedom&hl=en&sa=X&ei=iJ6ZVNDOGMjeggStroKQDA&ved=0CCYQ6AEwAA#v=onepage&q=story of American freedom&f=false The Story of American Freedom, 1998 ISBN 0-393-04665-6 p.4-5.
In the French and Indian War, British forces seized Canada from the French, but the francophone population remained politically isolated from the southern colonies. Excluding the Native Americans, who were being conquered and displaced, those 13 colonies had a population of over 2.1 million in 1770, about one-third that of Britain. Despite continuing new arrivals, the rate of natural increase was such that by the 1770s only a small minority of Americans had been born overseas.Walton, 2009, p. 35 The colonies' distance from Britain had allowed the development of self-government, but their success motivated monarchs to periodically seek to reassert royal authority.
Following the passage of the Lee Resolution, on July 2, 1776, which was the actual vote for independence, the Congress adopted the Declaration of Independence, on July 4, which proclaimed, in a long preamble, that humanity is created equal in their unalienable rights and that those rights were not being protected by Great Britain, and finally declared, in the words of the resolution, that the Thirteen Colonies were independent states and had no allegiance to the British crown in the United States. The fourth day of July is celebrated annually as Independence Day. In 1777, the Articles of Confederation established a weak government that operated until 1789. ξ22
Britain recognized the independence of the United States following their defeat at Yorktown.Greene and Pole, A Companion to the American Revolution p 357. Jonathan R. Dull, A Diplomatic History of the American Revolution (1987) p. 161. Lawrence S. Kaplan, "The Treaty of Paris, 1783: A Historiographical Challenge", International History Review, Sept 1983, Vol. 5 Issue 3, pp 431–442 In the peace treaty of 1783, American sovereignty was recognized from the Atlantic coast west to the Mississippi River. Nationalists led the Philadelphia Convention of 1787 in writing the United States Constitution, ratified in state conventions in 1788. The federal government was reorganized into three branches, on the principle of creating salutary checks and balances, in 1789. George Washington, who had led the revolutionary army to victory, was the first president elected under the new constitution. The Bill of Rights, forbidding federal restriction of personal freedoms and guaranteeing a range of legal protections, was adopted in 1791.Boyer, 2007, pp. 192–193
Although the federal government criminalized the international slave trade in 1808, after 1820 cultivation of the highly profitable cotton crop exploded in the Deep South, and along with it the slave population. ξ23 Walton, 2009, p. 43Gordon, 2004, pp. 27,29 The Second Great Awakening, beginning about 1800, converted millions to evangelical Protestantism. In the North it energized multiple social reform movements, including abolitionism; ξ24 in the South, Methodists and Baptists proselytized among slave populations.Heinemann, Ronald L., et al., Old Dominion, New Commonwealth: a history of Virginia 1607–2007, 2007 ISBN 978-0-8139-2609-4, p.197
Americans' eagerness to expand westward prompted a long series of American Indian Wars. ξ25 The Louisiana Purchase of French-claimed territory in 1803 almost doubled the nation's size. The War of 1812, declared against Britain over various grievances and fought to a draw, strengthened U.S. nationalism. ξ26 A series of U.S. military incursions into Florida led Spain to cede it and other Gulf Coast territory in 1819. ξ27 Expansion was aided by steam power, when steamboats began traveling along America's large water systems, which were connected by new , such as the Erie and the I&M; then, even faster railroads began their stretch across the nation's land.Winchester, pp. 198, 216, 251, 253
From 1820 to 1850, Jacksonian democracy began a set of reforms which included wider male suffrage; it led to the rise of the Second Party System of Democrats and Whigs as the dominant parties from 1828 to 1854. The Trail of Tears in the 1830s exemplified the Indian removal policy that moved Indians into the west to their own reservations. The U.S. annexed the Republic of Texas in 1845 during a period of expansionist Manifest destiny. ξ28 The 1846 Oregon Treaty with Britain led to U.S. control of the present-day American Northwest. ξ29 Victory in the Mexican–American War resulted in the 1848 Mexican Cession of California and much of the present-day American Southwest. ξ30
The California Gold Rush of 1848–49 spurred western migration and the creation of additional western states. ξ31 After the American Civil War, new transcontinental railways made relocation easier for settlers, expanded internal trade and increased conflicts with Native Americans. ξ32 Over a half-century, the loss of the American bison (called, buffalo) was an existential blow to many Plains Indians cultures. ξ33 In 1869, a new Peace Policy sought to protect Native-Americans from abuses, avoid further war, and secure their eventual U.S. citizenship, although conflicts, including several of the largest Indian Wars, continued throughout the West into the 1900s.Smith (2001), Grant, pp. 523–526
With the 1860 election of Abraham Lincoln, the first president from the largely anti-slavery Republican Party, conventions in thirteen states ultimately declared secession and formed the Confederate States of America, while the U.S. federal government maintained that secession was illegal. The ensuing war was at first for Union, then after 1863 as casualties mounted and Lincoln delivered his Emancipation Proclamation, a second war aim became abolition of slavery. The war remains the deadliest military conflict in American history, resulting in the deaths of approximately 618,000 soldiers as well as many civilians. ξ37
Following the Union victory in 1865, three amendments to the U.S. Constitution brought about the prohibition of slavery, gave U.S. citizenship to the nearly four million who had been slaves, Page 7 lists a total slave population of 3,953,760. and promised them voting rights. The war and its resolution led to a substantial increase in federal powerDe Rosa, Marshall L. (1997). The Politics of Dissolution: The Quest for a National Identity and the American Civil War. Edison, NJ: Transaction. p. 266. ISBN 1-56000-349-9. aimed at reintegrating and rebuilding the Southern states while ensuring the rights of the newly freed slaves. ξ38 Following the Reconstruction Era, throughout the South Jim Crow laws soon effectively disenfranchised most blacks and some poor whites. Over the subsequent decades, in both the North and the South blacks and some whites faced systemic discrimination, including racial segregation and occasional vigilante violence, sparking national movements against these abuses.
The end of the Indian Wars further expanded acreage under mechanical cultivation, increasing surpluses for international markets. Mainland expansion was completed by the purchase of Alaska from Russia in 1867. In 1893, pro-American elements in Hawaii overthrew the monarchy and formed the Republic of Hawaii, which the U.S. annexed in 1898. Puerto Rico, Guam, and the Philippines were ceded by Spain in the same year, following the Spanish–American War.
Rapid economic development at the end of the 19th century produced many prominent industrialists, and the U.S. economy became the world's largest. Dramatic changes were accompanied by social unrest and the rise of populist, socialist, and anarchist movements.Zinn, 2005 This period eventually ended with the advent of the Progressive Era, which saw significant reforms in many societal areas, including women's suffrage, alcohol prohibition, regulation of consumer goods, greater antitrust measures to ensure competition and attention to worker conditions.
In 1920, the women's rights movement won passage of a constitutional amendment granting women's suffrage. ξ40 The 1920s and 1930s saw the rise of radio for mass communication and the invention of early television.Winchester pp. 410–411 The prosperity of the Roaring Twenties ended with the Wall Street Crash of 1929 and the onset of the Great Depression. After his election as president in 1932, Franklin D. Roosevelt responded with the New Deal, which included the establishment of the Social Security system. ξ41 The Great Migration of millions of African Americans out of the American South began around WWI and extended through the 1960s; ξ42 whereas the Dust Bowl of the mid-1930s impoverished many farming communities and spurred a new wave of western migration. ξ43
The United States was at first effectively neutral during World War II's early stages but began supplying material to the Allies in March 1941 through the Lend-Lease program. On December 7, 1941, the Empire of Japan launched a surprise attack on Pearl Harbor, prompting the United States to join the Allies against the Axis powers. During the war, the United States was referred as one of the "Four Policemen" of Allies power who met to plan the post-war world, along with Britain, the Soviet Union and China. Though the nation lost more than 400,000 soldiers, p. 2. it emerged relatively undamaged from the war with even greater economic and military influence.Kennedy, Paul (1989). The Rise and Fall of the Great Powers. New York: Vintage. p. 358. ISBN 0-679-72019-7. Indeed, World War II ushered in the zenith of U.S. power in what came to be called the American Century, as , indicates: "Truman presided over the greatest military and economic power the world had ever known. War production had lifted the United States out of the Great Depression and had inaugurated an era of unimagined prosperity. Gross national product increased by 60 percent during the war, total earnings by 50 percent. Despite social unrest, labor agitation, racial conflict, and teenage vandalism, Americans had more discretionary income than ever before. Simultaneously, the U.S. government had built up the greatest war machine in human history. By the end of 1942, the United States was producing more arms than all the Axis states combined, and, in 1943, it made almost three times more armaments than did the Soviet Union. In 1945, the United States had two-thirds of the world's gold reserves, three-fourths of its invested capital, half of its shipping vessels, and half of its manufacturing capacity. Its GNP was three times that of the Soviet Union and more than five times that of Britain. It was also nearing completion of the atomic bomb, a technological and production feat of huge costs and proportions."
Allied conferences at Bretton Woods and Yalta outlined a new system of international organizations that placed the United States and Soviet Union at the center of world affairs. As an Allied victory was won in Europe, a 1945 international conference held in San Francisco produced the United Nations Charter, which became active after the war. The United States developed the first nuclear weapons and used them on Japan; the Japanese surrendered on September 2, ending World War II.Pacific War Research Society (2006). Japan's Longest Day. New York: Oxford University Press. ISBN 4-7700-2887-3.
The U.S. often opposed Third World movements that it viewed as Soviet-sponsored. American troops fought communist Chinese and forces in the Korean War of 1950–53. The Soviet Union's 1957 launch of the first artificial satellite and its 1961 launch of the first manned spaceflight initiated a "Space Race" in which the United States became the first nation to land a man on the moon in 1969. A proxy war in Southeast Asia eventually evolved into full American participation, as the Vietnam War.
At home, the U.S. experienced sustained economic expansion and a rapid growth of its population and middle class. Construction of an Interstate Highway System transformed the nation's infrastructure over the following decades. Millions moved from farms and inner cities to large housing developments.Winchester, pp. 305–308 In 1959 Hawaii became the 50th and last state added to the US. ξ49 A growing civil rights movement used nonviolence to confront segregation and discrimination, with Martin Luther King, Jr. becoming a prominent leader and figurehead. A combination of court decisions and legislation, culminating in the Civil Rights Act of 1964, sought to end racial discrimination. ξ50 Meanwhile, a counterculture movement grew which was fueled by opposition to the Vietnam war, black nationalism, and the sexual revolution. The launch of a "War on Poverty" expanded entitlement and welfare spending.
The 1970s and early 1980s saw the onset of stagflation. After his election in 1980, President Ronald Reagan responded to economic stagnation with free-market oriented reforms. Following the collapse of détente, he abandoned "containment" and initiated the more aggressive "rollback" strategy towards the USSR.Soss, 2010, p. 277Fraser, 1989Ferguson, 1986, pp. 43–53Williams, pp. 325–331 ξ51 After a surge in female labor participation over the previous decade, by 1985 the majority of women aged 16 and over were employed.
The late 1980s brought a "thaw" in relations with the USSR, and its collapse in 1991 finally ended the Cold War. ξ52 ξ53
Hayes, 2009US History.org, 2013 This brought about unipolarityCharles Krauthammer, "The Unipolar Moment," Foreign Affairs, 70/1, (Winter 1990/1), 23-33. with the U.S. unchallenged as the world's dominant superpower. The concept of Pax Americana, which had appeared in the post-World War II period, gained wide popularity as a term for the post-Cold War new world order.
Beginning in 1994, the U.S. entered into the North American Free Trade Agreement (NAFTA), linking 450 million people producing $17 trillion worth of goods and services. The goal of the agreement was to eliminate trade and investment barriers among the U.S., Canada, and Mexico by January 1, 2008; trade among the partners has soared since the agreement went into force. "North American Free Trade Agreement (NAFTA)" Office of the United States Trade Representative. Retrieved January 11, 2015.
Barack Obama, the first African American,
ξ61 and multiracial
ξ64 president, was elected in 2008 amid the Great Recession,
which began in December 2007 and ended in June 2009. US Business Cycle Expansions and Contractions, NBER, accessed January 11, 2015.
The United States is the world's third or fourth largest nation by total area (land and water), ranking behind Russia and Canada and just above or below China. The ranking varies depending on how two territories disputed by China and India are counted and how the total size of the United States is measured: calculations range from (area given in square miles) to (area given in square kilometers) to (area given in square kilometers) to 3,805,927 square miles (9.9 Mm2). Measured by only land area, the United States is third in size behind Russia and China, just ahead of Canada.
The coastal plain of the Atlantic seaboard gives way further inland to deciduous forests and the rolling hills of the Piedmont. The Appalachian Mountains divide the eastern seaboard from the Great Lakes and the grasslands of the Midwest. The Mississippi–Missouri River, the world's fourth longest river system, runs mainly north–south through the heart of the country. The flat, fertile prairie of the Great Plains stretches to the west, interrupted by a highland region in the southeast.
The Rocky Mountains, at the western edge of the Great Plains, extend north to south across the country, reaching altitudes higher than in Colorado. Farther west are the rocky Great Basin and deserts such as the Chihuahua and Mojave. The Sierra Nevada and Cascade mountain ranges run close to the Pacific coast, both ranges reaching altitudes higher than . The lowest and highest points in the contiguous United States are in the state of California, and only about apart. At an elevation of , Alaska's Denali (Mount McKinley) is the highest peak in the country and North America. Active are common throughout Alaska's Alexander and Aleutian Islands, and Hawaii consists of volcanic islands. The supervolcano underlying Yellowstone National Park in the Rockies is the continent's largest volcanic feature.
The United States, with its large size and geographic variety, includes most climate types. To the east of the 100th meridian, the climate ranges from humid continental in the north to humid subtropical in the south. The Great Plains west of the 100th meridian are semi-arid. Much of the Western mountains have an alpine climate. The climate is arid in the Great Basin, desert in the Southwest, Mediterranean in coastal California, and oceanic in coastal Oregon and Washington and southern Alaska. Most of Alaska is subarctic or polar. Hawaii and the southern tip of Florida are tropical, as are the populated territories in the Caribbean and the Pacific. Extreme weather is not uncommon—the states bordering the Gulf of Mexico are prone to hurricanes, and most of the world's occur within the country, mainly in Tornado Alley areas in the Midwest and South.
There are 58 national parks and hundreds of other federally managed parks, forests, and wilderness areas. Altogether, the government owns about 28% of the country's land area. Most of this is protected, though some is leased for oil and gas drilling, mining, logging, or cattle ranching; about .86% is used for military purposes.
Environmental issues have been on the national agenda since 1970. Environmental controversies include debates on oil and nuclear energy, dealing with air and water pollution, the economic costs of protecting wildlife, logging and deforestation, and international responses to global warming.Daynes & Sussman, 2010, pp. 3, 72, 74–76, 78Hays, Samuel P. (2000). A History of Environmental Politics since 1945. Many federal and state agencies are involved. The most prominent is the Environmental Protection Agency (EPA), created by presidential order in 1970. ξ65 The idea of wilderness has shaped the management of public lands since 1964, with the Wilderness Act.Turner, James Morton (2012). The Promise of Wilderness The Endangered Species Act of 1973 is intended to protect threatened and endangered species and their habitats, which are monitored by the United States Fish and Wildlife Service. ξ66
The United States has a very diverse population; 37 ancestry groups have more than one million members. are the largest ethnic group (more than 50 million) – followed by (circa 37 million), (circa 31 million) and (circa 28 million).
are the largest racial group; Black Americans are the nation's largest racial minority (note that in the U.S. Census, Hispanic and Latino Americans are counted as an ethnic group, not a racial group), and third largest ancestry group. are the country's second largest racial minority; the three largest Asian American ethnic groups are , , and .
The United States has a birth rate of 13 per 1,000, which is 5 births below the world average. Its population growth rate is positive at 0.7%, higher than that of many developed nations. In fiscal year 2012, over one million immigrants (most of whom entered through family reunification) were granted legal residence. "U.S. Legal Permanent Residents: 2012". Office of Immigration Statistics Annual Flow Report. Mexico has been the leading source of new residents since the 1965 Immigration Act. China, India, and the Philippines have been in the top four sending countries every year since the 1990s. , approximately 11.4 million residents are illegal immigrants. As of 2015, 47% of all immigrants are Hispanic, 26% are Asian, 18% are white and 8% are black. The percentage of immigrants who are Asian is increasing while the percentage who are Hispanic is decreasing.
According to a survey conducted by the Williams Institute, nine million Americans, or roughly 3.4% of the adult population identify themselves as homosexual, bisexual, or transgender. A 2012 Gallup poll also concluded that 3.5% of adult Americans identified as LGBT. The highest percentage came from the District of Columbia (10%), while the lowest state was North Dakota at 1.7%. In a 2013 survey, the Centers for Disease Control and Prevention found that 96.6% of Americans identify as straight, while 1.6% identify as gay or lesbian, and 0.7% identify as being bisexual.
In 2010, the U.S. population included an estimated 5.2 million people with some American Indian or Alaska Native ancestry (2.9 million exclusively of such ancestry) and 1.2 million with some native Hawaiian or Pacific island ancestry (0.5 million exclusively). The census counted more than 19 million people of "Some Other Race" who were "unable to identify with any" of its five official race categories in 2010.
The population growth of Hispanic and Latino Americans (the terms are officially interchangeable) is a major demographic trend. The 50.5 million Americans of Hispanic descent are identified as sharing a distinct "ethnicity" by the Census Bureau; 64% of Hispanic Americans are of Mexican descent. Between 2000 and 2010, the country's Hispanic population increased 43% while the non-Hispanic population rose just 4.9%. Much of this growth is from immigration; in 2007, 12.6% of the U.S. population was foreign-born, with 54% of that figure born in Latin America.
Fertility is also a factor; in 2010 the average Hispanic woman gave birth to 2.35 children in her lifetime, compared to 1.97 for non-Hispanic black women and 1.79 for non-Hispanic white women (both below the replacement rate of 2.1). Minorities (as defined by the Census Bureau as all those beside non-Hispanic, non-multiracial whites) constituted 36.3% of the population in 2010 (this is nearly 40% in 2015), U.S. Census Bureau: "U.S. Census Bureau Delivers Final State 2010 Census Population Totals for Legislative Redistricting" see custom table, 2nd worksheet and over 50% of children under age one, and are projected to constitute the majority by 2042. This contradicts the report by the National Vital Statistics Reports, based on the U.S. census data, which concludes that 54% (2,162,406 out of 3,999,386 in 2010) of births were non-Hispanic white. The Hispanic birth rate plummeted 25% between 2006 and 2013 while the rate for non-Hispanics decreased just 5%.
About 82% of Americans live in urban areas (including suburbs); about half of those reside in cities with populations over 50,000. The US has numerous clusters of cities known as megaregions, the largest being the Great Lakes Megalopolis followed by the Northeast Megalopolis and Southern California. In 2008, 273 incorporated places had populations over 100,000, nine cities had more than one million residents, and four global cities had over two million (New York City, Los Angeles, Chicago, and Houston). There are 52 metropolitan areas with populations greater than one million. Of the 50 fastest-growing metro areas, 47 are in the West or South. The metro areas of San Bernardino, Dallas, Houston, Atlanta, and Phoenix all grew by more than a million people between 2000 and 2008.
|Languages spoken at home by more than 1,000,000 persons in the U.S.|
as of 2010
English (American English) is the de facto national language. Although there is no official language at the federal level, some laws—such as U.S. naturalization requirements—standardize English. In 2010, about 230 million, or 80% of the population aged five years and older, spoke only English at home. Spanish, spoken by 12% of the population at home, is the second most common language and the most widely taught second language."Language Spoken at Home by the U.S. Population, 2010", American Community Survey, U.S. Census Bureau, in World Almanac and Book of Facts 2012, p. 615. Some Americans advocate making English the country's official language, as it is in 28 states.
Both Hawaiian and English are official languages in Hawaii, by state law. Alaska recognizes twenty Native languages. Alaska OKs Bill Making Native Languages Official April 21, 2014; Bill Chappell; NPR.org While neither has an official language, New Mexico has laws providing for the use of both English and Spanish, as Louisiana does for English and French. ξ67 Other states, such as California, mandate the publication of Spanish versions of certain government documents including court forms. Many jurisdictions with large numbers of non-English speakers produce government materials, especially voting information, in the most commonly spoken languages in those jurisdictions.
Several insular territories grant official recognition to their native languages, along with English: Samoan
ξ69 and Chamorro ξ70
ξ72 are recognized by American Samoa and Guam, respectively; Carolinian and Chamorro are recognized by the Northern Mariana Islands; ξ73 Cherokee is officially recognized by the Cherokee Nation within the Cherokee tribal jurisdiction area in eastern Oklahoma; ξ74 Spanish is an official language of Puerto Rico and is more widely spoken than English there.
According to the Center for Immigration Studies, Arabic and Urdu (Pakistan's national language) are the fastest growing foreign languages spoken at American households. According to the survey, more than 63.2 million US residents speak a language other than English at home. In recent years, Arabic speaking residents increased by 29%, Urdu by 23% and Persian by 9%.
The most widely taught foreign languages at all levels in the United States (in terms of enrollment numbers) are: Spanish (around 7.2 million students), French (1.5 million), and German (500,000). Other commonly taught languages (with 100,000 to 250,000 learners) include Latin, Japanese, American Sign Language, Italian, and Chinese. 18% of all Americans claim to speak at least one language in addition to English.
|Religious affiliation in the U.S. (2014)|
|Other Non-Christian faiths|
|Nothing in particular|
|Don't know/refused answer|
The First Amendment of the U.S. Constitution guarantees the free exercise of religion and forbids Congress from passing laws respecting its establishment. Christianity is by far the most common religion practiced in the U.S., but other religions are followed, too. In a 2013 survey, 56% of Americans said that religion played a "very important role in their lives", a far higher figure than that of any other wealthy nation. In a 2009 Gallup poll 42% of Americans said that they attended church weekly or almost weekly; the figures ranged from a low of 23% in Vermont to a high of 63% in Mississippi.
As with other Western countries, the U.S. is becoming less religious. Irreligion is growing rapidly among Americans under 30. Polls show that overall American confidence in organized religion is declining, and that younger Americans in particular are becoming increasingly irreligious. According to a 2012 study, Protestant share of U.S. population dropped to 48%, thus ending its status as religious category of the majority for the first time. "Nones" on the Rise: One-in-Five Adults Have No Religious Affiliation Americans with no religion have 1.7 children compared to 2.2 among Christians. The unaffiliated are less likely to get married with 37% marrying compared to 52% of Christians.
According to a 2014 survey, 70.6% of adults identified themselves as Christian, Protestant denominations accounted for 46.5%, while Roman Catholicism, at 20.8%, was the largest individual denomination. The total reporting non-Christian religions in 2014 was 5.9%. Other religions include Judaism (1.9%), Islam (0.9%), Buddhism (0.7%), Hinduism (0.7%). The survey also reported that 22.8% of Americans described themselves as agnostic, atheist or simply having no religion, up from 8.2% in 1990. There are also Unitarian Universalist, Baha'i, Sikh, Jain, Shinto, Confucian, Taoist, Druid, Native American, , humanist and deist communities.Media, Minorities, and Meaning: A Critical Introduction — Page 88, Debra L. Merskin – 2010
Protestantism is the largest Christian religious grouping in the United States. Baptists collectively form the largest branch of Protestantism, and the Southern Baptist Convention is the largest individual Protestant denomination. About 26% of Americans identify as Evangelical Protestants, while 15% are Mainline and 7% belong to a traditionally Black church. Roman Catholicism in the United States has its origin in the Spanish and French colonization of the Americas, and later grew because of Irish, Italian, Polish, German and Hispanic immigration. Rhode Island is the only state where a majority of the population is Catholic. Lutheranism in the U.S. has its origin in immigration from Northern Europe and Germany. North and South Dakota are the only states in which a plurality of the population is Lutheran. Presbyterianism was introduced in North America by Scottish and Ulster Scots immigrants. Although it has spread across the United States, it is heavily concentrated on the East Coast. Dutch Reformed congregations were founded first in New Amsterdam (New York City) before spreading westward. Utah is the only state where Mormonism is the religion of the majority of the population. The Mormon Corridor also extends to parts of Idaho, Nevada and Wyoming. ξ75
The Bible Belt is an informal term for a region in the Southern United States in which socially conservative Evangelical Protestantism is a significant part of the culture and Christian church attendance across the denominations is generally higher than the nation's average. By contrast, religion plays the least important role in New England and in the Western United States.
The U.S. teenage pregnancy rate is 26.5 per 1,000 women. The rate has declined by 57% since 1991. In 2013, the highest teenage birth rate was in Alabama, and the lowest in Wyoming. Abortion is legal throughout the U.S., owing to Roe v. Wade, a 1973 landmark decision by the Supreme Court of the United States. While the abortion rate is falling, the abortion ratio of 241 per 1,000 live births and abortion rate of 15 per 1,000 women aged 15–44 remain higher than those of most Western nations. In 2013, the average age at first birth was 26 and 40.6% of births were to unmarried women.
The total fertility rate (TFR) was estimated for 2013 at 1.86 births per woman. Adoption in the United States is common and relatively easy from a legal point of view (compared to other Western countries). In 2001, with over 127,000 adoptions, the U.S. accounted for nearly half of the total number of adoptions worldwide. It is legal for same-sex couples to adopt. Polygamy is illegal throughout the U.S.
In the American federalist system, citizens are usually subject to three levels of government: federal, state, and local. The local government's duties are commonly split between county and municipal governments. In almost all cases, executive and legislative officials are elected by a plurality vote of citizens by district. There is no proportional representation at the federal level, and it is rare at lower levels. ξ76
The federal government is composed of three branches:
The House of Representatives has 435 voting members, each representing a congressional district for a two-year term. House seats are apportioned among the states by population every tenth year. At the 2010 census, seven states had the minimum of one representative, while California, the most populous state, had 53.
The Senate has 100 members with each state having two senators, elected at-large to six-year terms; one third of Senate seats are up for election every other year. The President serves a four-year term and may be elected to the office no more than twice. The President is not elected by direct vote, but by an indirect electoral college system in which the determining votes are apportioned to the states and the District of Columbia. The Supreme Court, led by the Chief Justice of the United States, has nine members, who serve for life.
The state governments are structured in roughly similar fashion; Nebraska uniquely has a unicameral legislature. The governor (chief executive) of each state is directly elected. Some state judges and cabinet officers are appointed by the governors of the respective states, while others are elected by popular vote.
The original text of the Constitution establishes the structure and responsibilities of the federal government and its relationship with the individual states. Article One protects the right to the "great writ" of habeas corpus. The Constitution has been amended 27 times;Feldstein, Fabozzi, 2011, p. 9 the first ten amendments, which make up the Bill of Rights, and the Fourteenth Amendment form the central basis of Americans' individual rights. All laws and governmental procedures are subject to judicial review and any law ruled by the courts to be in violation of the Constitution is voided. The principle of judicial review, not explicitly mentioned in the Constitution, was established by the Supreme Court in Marbury v. Madison (1803)Schultz, 2009, pp. 164, 453, 503 in a decision handed down by Chief Justice John Marshall.Schultz, 2009, p. 38
Congressional Districts are reapportioned among the states following each decennial Census of Population. Each state then draws single member districts to conform with the census apportionment. The total number of Representatives is 435, and delegate Members of Congress represent the District of Columbia and the five major US territories.House of Representatives. History, Art & Archives, Determining Apportionment and Reapportioning. viewed August 21, 2015.
The United States also observes tribal sovereignty of the Native American nations. Though reservations are within state borders, the reservation is a sovereign entity. While the United States recognizes this sovereignty, other countries may not.
Within American political culture, the Republican Party is considered "conservative" and the Democratic Party is considered "liberal". ξ83 The states of the Northeast and West Coast and some of the Great Lakes states, known as "blue states", are relatively liberal. The "red states" of the South and parts of the Great Plains and Rocky Mountains are relatively conservative.
The winner of the 2008 and 2012 presidential elections, Democrat Barack Obama, is the 44th, and current, U.S. president. Current leadership in the Senate includes Democratic Vice President Joseph Biden, Republican President Pro Tempore (Pro Tem) Orrin Hatch, Majority Leader Mitch McConnell, and Minority Leader Harry Reid.US Senate, Senate Organization Chart for the 114th Congress, viewed August 25, 2015. Leadership in the House includes Speaker of the House Paul Ryan, Majority Leader Kevin McCarthy, and Minority Leader Nancy Pelosi.US House of Representatives, Leadership, viewed August 25, 2015.
In the 114th United States Congress, both the House of Representatives and the Senate are controlled by the Republican Party. The Senate currently consists of 54 Republicans, and 44 Democrats with two independents who caucus with the Democrats; the House consists of 246 Republicans and 188 Democrats, with one vacancy. In state governorships, there are 31 Republicans, 18 Democrats and one independent.MultiState Associates Incorporated. 2015 Governors and Legislatures. Viewed January 14, 2015. Among the DC mayor and the 5 territorial governors, there are 2 Republicans, 2 Democrats (one is also in the PPD), and 2 Independents.National Governor's Association. Current Governors, viewed January 14, 2015; DeBonis, Mike. " Bowser is elected D.C. Mayor", Washington Post November 5, 2014, viewed January 14, 2015.
The United States has a "special relationship" with the United Kingdom ξ84 and strong ties with Canada, Australia, New Zealand, the Philippines, Japan, South Korea, Israel, and several European Union countries, including France, Italy, Germany, and Spain. It works closely with fellow NATO members on military and security issues and with its neighbors through the Organization of American States and free trade agreements such as the trilateral North American Free Trade Agreement with Canada and Mexico. In 2008, the United States spent a net $25.4 billion on official development assistance, the most in the world. As a share of America's large gross national income (GNI), however, the U.S. contribution of 0.18% ranked last among 22 donor states. By contrast, private overseas giving by Americans is relatively generous.
The U.S. exercises full international defense authority and responsibility for three sovereign nations through Compact of Free Association with Micronesia, the Marshall Islands and Palau, all of which are Pacific island nations which were part of the U.S.-administered Trust Territory of the Pacific Islands beginning after World War II, and gained independence in subsequent years. ξ81
U.S. taxation is generally progressive, especially the federal income taxes, and is among the most progressive in the developed world.Taxation in the US:
and about half of all taxes. Payroll taxes for Social Security are a flat regressive tax, with no tax charged on income above $118,500 (for 2015 and 2016) and no tax at all paid on unearned income from things such as stocks and capital gains. The historic reasoning for the regressive nature of the payroll tax is that entitlement programs have not been viewed as welfare transfers. However, according to the Congressional Budget Office the net effect of Social Security is that the benefit to tax ratio ranges from roughly 70% for the top earnings quintile to about 170% for the lowest earning quintile, making the system progressive. Is Social SecurityProgressove? CBO
The top 10% paid 51.8% of total federal taxes in 2009, and the top 1%, with 13.4% of pre-tax national income, paid 22.3% of federal taxes. In 2013 the Tax Policy Center projected total federal effective tax rates of 35.5% for the top 1%, 27.2% for the top quintile, 13.8% for the middle quintile, and −2.7% for the bottom quintile. The incidence of corporate income tax has been a matter of considerable ongoing controversy for decades.Tax incidence of corporate tax in the United States:
During FY 2012, the federal government spent $3.54 trillion on a budget or cash basis, down $60 billion or 1.7% vs. FY 2011 spending of $3.60 trillion. Major categories of FY 2012 spending included: Medicare & Medicaid ($802B or 23% of spending), Social Security ($768B or 22%), Defense Department ($670B or 19%), non-defense discretionary ($615B or 17%), other mandatory ($461B or 13%) and interest ($223B or 6%).
Historically, the U.S. public debt as a share of GDP increased during wars and recessions, and subsequently declined. For example, debt held by the public as a share of GDP peaked just after World War II (113% of GDP in 1945), but then fell over the following 30 years. In recent decades, large budget deficits and the resulting increases in debt have led to concern about the long-term sustainability of the federal government's fiscal policies. However, these concerns are not universally shared.
Military service is voluntary, though conscription may occur in wartime through the Selective Service System. American forces can be rapidly deployed by the Air Force's large fleet of transport aircraft, the Navy's 10 active , and at sea with the Navy's Atlantic and Pacific fleets. The military operates 865 bases and facilities abroad, and maintains deployments greater than 100 active duty personnel in 25 foreign countries.
The military budget of the United States in 2011 was more than $700 billion, 41% of global military spending and equal to the next 14 largest national military expenditures combined. At 4.7% of GDP, the rate was the second-highest among the top 15 military spenders, after Saudi Arabia. U.S. defense spending as a percentage of GDP ranked 23rd globally in 2012 according to the CIA. Defense's share of U.S. spending has generally declined in recent decades, from Cold War peaks of 14.2% of GDP in 1953 and 69.5% of federal outlays in 1954 to 4.7% of GDP and 18.8% of federal outlays in 2011.
The proposed base Department of Defense budget for 2012, $553 billion, was a 4.2% increase over 2011; an additional $118 billion was proposed for the military campaigns in Iraq and Afghanistan. The last American troops serving in Iraq departed in December 2011; 4,484 service members were killed during the Iraq War. Approximately 90,000 U.S. troops were serving in Afghanistan in April 2012; by November 8, 2013 2,285 had been killed during the War in Afghanistan.
In 2012 there were 4.7 murders per 100,000 persons in the United States, a 54% decline from the modern peak of 10.2 in 1980.
In 2001–2, the United States had above-average levels of violent crime and particularly high levels of gun violence compared to other developed nations. A cross-sectional analysis of the World Health Organization Mortality Database from 2003 showed that United States "homicide rates were 6.9 times higher than rates in the other high-income countries, driven by firearm homicide rates that were 19.5 times higher." Gun ownership rights continue to be the subject of contentious political debate.
From 1980 through 2008 males represented 77% of homicide victims and 90% of offenders. Blacks committed 52.5% of all homicides during that span, at a rate almost eight times that of whites ("whites" includes most Hispanics), and were victimized at a rate six times that of whites. Most homicides were intraracial, with 93% of black victims killed by blacks and 84% of white victims killed by whites. In 2012, Louisiana had the highest rate of murder and non-negligent manslaughter in the U.S., and New Hampshire the lowest. The FBI's Uniform Crime Reports estimates that there were 3,246 violent and property crimes per 100,000 residents in 2012, for a total of over 9 million total crimes.
Capital punishment is sanctioned in the United States for certain federal and military crimes, and used in 31 states. No executions took place from 1967 to 1977, owing in part to a U.S. Supreme Court ruling striking down arbitrary imposition of the death penalty. In 1976, that Court ruled that, under appropriate circumstances, capital punishment may constitutionally be imposed. Since the decision there have been more than 1,300 executions, a majority of these taking place in three states: Texas, Virginia, and Oklahoma. Meanwhile, several states have either abolished or struck down death penalty laws. In 2014, the country had the fifth highest number of executions in the world, following China, Iran, Saudi Arabia, and Iraq.
The United States has the highest documented incarceration rate and total prison population in the world. ξ86
For the latest data, see
National Research Council. The Growth of Incarceration in the United States: Exploring Causes and Consequences. Washington, DC: The National Academies Press, 2014. Retrieved May 10, 2014.
Nation Behind Bars: A Human Rights Solution. Human Rights Watch, May 2014. Retrieved May 10, 2014. At the start of 2008, more than 2.3 million people were incarcerated, more than one in every 100 adults. ξ87 At year end 2012, the combined U.S. adult correctional systems supervised about 6,937,600 offenders. About 1 in every 35 adult residents in the United States was under some form of correctional supervision at yearend 2012, the lowest rate observed since 1997. The prison population has quadrupled since 1980. ξ88 However, the imprisonment rate for all prisoners sentenced to more than a year in state or federal facilities is 478 per 100,000 in 2013 and the rate for pre-trial/remand prisoners is 153 per 100,000 residents in 2012. The country's high rate of incarceration is largely due to changes in sentencing guidelines and drug policies. ξ89 According to the Federal Bureau of Prisons, the majority of inmates held in federal prisons are convicted of drug offenses. The privatization of prisons and prison services which began in the 1980s has been a subject of debate.
Selman, Donna and Paul Leighton (2010). Punishment for Sale: Private Prisons, Big Business, and the Incarceration Binge. Rowman & Littlefield Publishers. p. xi. ISBN 1-4422-0173-8.
Gottschalk, Marie (2014). Caught: The Prison State and the Lockdown of American Politics. Princeton University Press. p. 70 ISBN 0-691-16405-3.
Peter Kerwin (June 10, 2015). Study finds private prisons keep inmates longer, without reducing future crime. University of Wisconsin–Madison News. Retrieved June 11, 2015. In 2008, Louisiana had the highest incarceration rate, and Maine the lowest. ξ91
|3.6% (Q2 2015, annualized)|
The US's nominal GDP is estimated to be $17.528 trillion From 1983 to 2008, U.S. real compounded annual GDP growth was 3.3%, compared to a 2.3% weighted average for the rest of the G7. The country ranks ninth in the world in nominal GDP per capita and sixth in GDP per capita at PPP. The U.S. dollar is the world's primary reserve currency.
The United States is the largest importer of goods and second largest exporter, though exports per capita are relatively low. In 2010, the total U.S. trade deficit was $635 billion. Canada, China, Mexico, Japan, and Germany are its top trading partners. In 2010, oil was the largest import commodity, while transportation equipment was the country's largest export. Japan is the largest foreign holder of U.S. public debt. The largest holder of the U.S. debt are American entities, including federal government accounts and the Federal Reserve, who hold the majority of the debt.
The Stockholm International Peace Research Institute, SIPRI, found that the United States' arms industry was the world's biggest exporter of major weapons from 2005–2009, and remained the largest exporter of major weapons during a period between 2010–2014, followed by Russia, China (PRC), and Germany.
In 2009, the private sector was estimated to constitute 86.4% of the economy, with federal government activity accounting for 4.3% and state and local government activity (including federal transfers) the remaining 9.3%. The number of employees at all levels of government outnumber those in manufacturing by 1.7 to 1. While its economy has reached a postindustrial level of development and its service sector constitutes 67.8% of GDP, the United States remains an industrial power. The leading business field by gross business receipts is wholesale and retail trade; by net income it is manufacturing. In the franchising business model, McDonald's and Subway are the two most recognized brands in the world. Coca-Cola is the most recognized soft drink company in the world.
Chemical products are the leading manufacturing field. The United States is the largest producer of oil in the world, as well as its second largest importer. It is the world's number one producer of electrical and nuclear energy, as well as liquid natural gas, sulfur, phosphates, and salt. The National Mining Association provides data pertaining to coal and that include beryllium, copper, lead, magnesium, zinc, titanium and others.
Agriculture accounts for just under 1% of GDP, yet the United States is the world's top producer of corn and soybeans. The National Agricultural Statistics Service maintains agricultural statistics for products that include , , rye, wheat, rice, cotton, corn, barley, hay, sunflowers, and oilseeds. In addition, the United States Department of Agriculture (USDA) provides livestock statistics regarding beef, poultry, pork, and dairy products. The country is the primary developer and grower of genetically modified food, representing half of the world's biotech crops.
Consumer spending comprises 68% of the U.S. economy in 2015. "Personal Consumption Expenditures (PCE)/Gross Domestic Product (GDP)" FRED Graph, Federal Reserve Bank of St. Louis In August 2010, the American labor force consisted of 154.1 million people. With 21.2 million people, government is the leading field of employment. The largest private employment sector is health care and social assistance, with 16.4 million people. About 12% of workers are unionized, compared to 30% in Western Europe. The World Bank ranks the United States first in the ease of hiring and firing workers. The United States is ranked among the top three in the Global Competitiveness Report as well. It has a smaller welfare state and redistributes less income through government action than European nations tend to.
The United States is the only advanced economy that does not guarantee its workers paid vacationRay, Rebecca; Sanes, Milla; Schmitt, John (May 2013). No-Vacation Nation Revisited. Center for Economic and Policy Research. Retrieved September 8, 2013. and is one of just a few countries in the world without paid family leave as a legal right, with the others being Papua New Guinea, Suriname and Liberia.Bernard. Tara Siegel (February 22, 2013). "In Paid Family Leave, U.S. Trails Most of the Globe". The New York Times. Retrieved August 27, 2013. However, 74% of full-time American workers get paid sick leave, according to the Bureau of Labor Statistics, although only 24% of part-time workers get the same benefits. While federal law currently does not require sick leave, it's a common benefit for government workers and full-time employees at corporations. In 2009, the United States had the third highest workforce productivity per person in the world, behind Luxembourg and Norway. It was fourth in productivity per hour, behind those two countries and the Netherlands.
The 2008–2012 global recession had a significant impact on the United States, with output still below potential according to the Congressional Budget Office. It brought high unemployment (which has been decreasing but remains above pre-recession levels), along with low consumer confidence, the continuing decline in home values and increase in foreclosures and personal bankruptcies, an escalating federal debt crisis, inflation, and rising petroleum and food prices. There remains a record proportion of long-term unemployed, continued decreasing household income, and tax and federal budget increases.
There has been a widening gap between productivity and median incomes since the 1970s.Mishel, Lawrence (April 26, 2012). The wedges between productivity and median compensation growth. Economic Policy Institute. Retrieved October 18, 2013. However, the gap between total compensation and productivity is not as wide because of increased employee benefits such as health insurance. While inflation-adjusted ("real") household income had been increasing almost every year from 1947 to 1999, it has since been flat on balance and has even decreased recently.
According to Congressional Research Service, during this same period, immigration to the United States increased, while the lower 90% of tax filers incomes became stagnant, and eventually decreasing since 2000. The rise in the share of total annual income received by the top 1 percent, which has more than doubled from 9 percent in 1976 to 20 percent in 2011, has had a significant impact on income inequality,Alvaredo, Facundo; Atkinson, Anthony B.; Piketty, Thomas; Saez, Emmanuel (2013). "The Top 1 Percent in International and Historical Perspective". Journal of Economic Perspectives. Retrieved August 16, 2013. leaving the United States with one of the widest income distributions among OECD nations.
Focus on Top Incomes and Taxation in OECD Countries: Was the crisis a game changer? OECD, May 2014. Retrieved May 1, 2014. The post-recession income gains have been very uneven, with the top 1 percent capturing 95 percent of the income gains from 2009 to 2012.Saez, Emmanuel (September 3, 2013). "Striking it Richer: The Evolution of Top Incomes in the United States". University of California, Berkeley. Retrieved September 11, 2013. The extent and relevance of income inequality is a matter of debate.
Wealth, like income and taxes, is highly concentrated; the richest 10% of the adult population possess 72% of the country's household wealth, while the bottom half claim only 2%.Piketty, Thomas (2014). Capital in the Twenty-First Century. Belknap Press. ISBN 0-674-43000-X p. 257 Between June 2007 and November 2008 the global recession led to falling asset prices around the world. Assets owned by Americans lost about a quarter of their value. Since peaking in the second quarter of 2007, household wealth was down $14 trillion, but has since increased $14 trillion over 2006 levels." Americans' wealth drops $1.3 trillion". CNN Money. June 11, 2009. At the end of 2014, household debt amounted to $11.8 trillion, down from $13.8 trillion at the end of 2008.
There were about 578,424 sheltered and unsheltered homeless persons in the U.S. in January 2014, with almost two-thirds staying in an emergency shelter or transitional housing program. In 2011 16.7 million children lived in food-insecure households, about 35% more than 2007 levels, though only 1.1% of U.S. children, or 845,000, saw reduced food intake or disrupted eating patterns at some point during the year, and most cases were not chronic. According to a 2014 report by the Census Bureau, one in five young adults lives in poverty today, up from one in seven in 1980. New Census Bureau Statistics Show How Young Adults Today Compare With Previous Generations in Neighborhoods Nationwide. United States Census Bureau, December 4, 2014.
About 12% of children are enrolled in parochial or nonsectarian . Just over 2% of children are homeschooled. The U.S. spends more on education per student than any nation in the world, spending more than $11,000 per elementary student in 2010 and more than $12,000 per high school student. Some 80% of U.S. college students attend public universities.
The United States has many competitive private and public institutions of higher education. The majority of world's top universities listed by different ranking organizations are in the US. There are also local with generally more open admission policies, shorter academic programs, and lower tuition. Of Americans 25 and older, 84.6% graduated from high school, 52.6% attended some college, 27.2% earned a bachelor's degree, and 9.6% earned graduate degrees. The basic literacy rate is approximately 99%.For more detail on U.S. literacy, see A First Look at the Literacy of America's Adults in the 21st century, U.S. Department of Education (2003). The United Nations assigns the United States an Education Index of 0.97, tying it for 12th in the world.
As for public expenditures on higher education, the U.S. trails some other OECD nations but spends more per student than the OECD average, and more than all nations in combined public and private spending. , student loan debt exceeded one trillion dollars, more than Americans owe on credit cards. Student Loan Debt Exceeds One Trillion Dollars. NPR, April 4, 2012. Retrieved September 8, 2013.
Core American culture was established by Protestant British colonists and shaped by the frontier settlement process, with the traits derived passed down to descendants and transmitted to immigrants through assimilation. Americans have traditionally been characterized by a strong work ethic, competitiveness, and individualism, as well as a unifying belief in an "American creed" emphasizing liberty, equality, private property, democracy, rule of law, and a preference for limited government. ξ92 : also see American's Creed, written by William Tyler Page and adopted by Congress in 1918. Americans are extremely charitable by global standards. According to a 2006 British study, Americans gave 1.67% of GDP to charity, more than any other nation studied, more than twice the second place British figure of 0.73%, and around twelve times the French figure of 0.14%.
The American Dream, or the perception that Americans enjoy high social mobility, plays a key role in attracting immigrants. Whether this perception is realistic has been a topic of debate. Gould, Elise (October 10, 2012). "U.S. lags behind peer countries in mobility." Economic Policy Institute. Retrieved July 15, 2013.CAP: Understanding Mobility in America. April 26, 2006 While mainstream culture holds that the United States is a classless society, ξ93 scholars identify significant differences between the country's social classes, affecting socialization, language, and values. ξ94 Americans' self-images, social viewpoints, and cultural expectations are associated with their occupations to an unusually close degree. ξ95 While Americans tend greatly to value socioeconomic achievement, being ordinary or average is generally seen as a positive attribute. ξ96
Characteristic dishes such as apple pie, fried chicken, pizza, hamburgers, and hot dogs derive from the recipes of various immigrants. French fries, Mexican dishes such as burritos and tacos, and pasta dishes freely adapted from Italian sources are widely consumed. Americans drink three times as much coffee as tea. Marketing by U.S. industries is largely responsible for making orange juice and milk ubiquitous breakfast beverages.Smith, 2004, pp. 131–132Levenstein, 2003, pp. 154–55
American eating habits owe a great deal to that of their British culinary roots with some variations. Although American lands could grow newer vegetables England could not, most colonists would not eat these new foods until accepted by Europeans. ξ99 Over time American foods changed to a point that food critic, John L. Hess stated in 1972: "Our founding fathers were as far superior to our present political leaders in the quality of their food as they were in the quality of their prose and intelligence". ξ100
The American fast food industry, the world's largest, pioneered the drive-through format in the 1940s. Fast food consumption has sparked health concerns. During the 1980s and 1990s, Americans' caloric intake rose 24%; frequent dining at fast food outlets is associated with what public health officials call the American "obesity epidemic".Boslaugh, Sarah (2010). "Obesity Epidemic", in Culture Wars: An Encyclopedia of Issues, Viewpoints, and Voices, ed. Roger Chapman. Armonk, N.Y.: M. E. Sharpe, pp. 413–14. ISBN 978-0-7656-1761-3. Highly sweetened soft drinks are widely popular, and sugared beverages account for nine percent of American caloric intake.
Eleven U.S. citizens have won the Nobel Prize in Literature, most recently Toni Morrison in 1993. William Faulkner, Ernest Hemingway and John Steinbeck are often named among the most influential writers of the 20th century.Quinn, Edward (2006). A Dictionary of Literary and Thematic Terms. Infobase, p. 361. ISBN 0-8160-6243-9. Seed, David (2009). A Companion to Twentieth-Century United States Fiction. Chichester, West Sussex: John Wiley and Sons, p. 76. ISBN 1-4051-4691-5. Meyers, Jeffrey (1999). Hemingway: A Biography. New York: Da Capo, p. 139. ISBN 0-306-80890-0. Popular literary genres such as the Western and hardboiled crime fiction developed in the United States. The Beat Generation writers opened up new literary approaches, as have postmodernist authors such as John Barth, Thomas Pynchon, and Don DeLillo. ξ101
The transcendentalists, led by Thoreau and Ralph Waldo Emerson, established the first major American philosophical movement. After the Civil War, Charles Sanders Peirce and then William James and John Dewey were leaders in the development of pragmatism. In the 20th century, the work of W. V. O. Quine and Richard Rorty, and later Noam Chomsky, brought analytic philosophy to the fore of American philosophical academia. John Rawls and Robert Nozick led a revival of political philosophy. Cornel West and Judith Butler have led a continental tradition in American philosophical academia. Chicago school economists like Milton Friedman, James M. Buchanan, and Thomas Sowell have impacted various fields in social and political philosophy.
In the visual arts, the Hudson River School was a mid-19th-century movement in the tradition of European naturalism. The realist paintings of Thomas Eakins are now widely celebrated. The 1913 Armory Show in New York City, an exhibition of European modernist art, shocked the public and transformed the U.S. art scene.Brown, Milton W. (1988 1963). The Story of the Armory Show. New York: Abbeville. ISBN 0-89659-795-4. Georgia O'Keeffe, Marsden Hartley, and others experimented with new, individualistic styles. Major artistic movements such as the abstract expressionism of Jackson Pollock and Willem de Kooning and the pop art of Andy Warhol and Roy Lichtenstein developed largely in the United States. The tide of modernism and then postmodernism has brought fame to American architects such as Frank Lloyd Wright, Philip Johnson, and Frank Gehry. ξ102
One of the first major promoters of American theater was impresario P. T. Barnum, who began operating a lower Manhattan entertainment complex in 1841. The team of Harrigan and Hart produced a series of popular musical comedies in New York starting in the late 1870s. In the 20th century, the modern musical form emerged on Broadway; the songs of musical theater composers such as Irving Berlin, Cole Porter, and Stephen Sondheim have become pop standards. Playwright Eugene O'Neill won the Nobel literature prize in 1936; other acclaimed U.S. dramatists include multiple Pulitzer Prize winners Tennessee Williams, Edward Albee, and August Wilson. ξ104
Though little known at the time, Charles Ives's work of the 1910s established him as the first major U.S. composer in the classical tradition, while experimentalists such as Henry Cowell and John Cage created a distinctive American approach to classical composition. Aaron Copland and George Gershwin developed a new synthesis of popular and classical music. Choreographers Isadora Duncan and Martha Graham helped create modern dance, while George Balanchine and Jerome Robbins were leaders in 20th-century ballet. Americans have long been important in the modern artistic medium of photography, with major photographers including Alfred Stieglitz, Edward Steichen, and Ansel Adams. ξ105
Elvis Presley and Chuck Berry were among the mid-1950s pioneers of rock and roll. In the 1960s, Bob Dylan emerged from the folk revival to become one of America's most celebrated songwriters and James Brown led the development of funk. More recent American creations include hip hop and house music. American pop stars such as Presley, Michael Jackson, and Madonna have become global celebrities, as have contemporary musical artists such as Taylor Swift, Britney Spears, Katy Perry, and Beyoncé as well as hip hop artists Jay Z, Eminem and Kanye West.
Director D. W. Griffith, American's top filmmaker during the silent film period, was central to the development of film grammar, and producer/entrepreneur Walt Disney was a leader in both animated film and movie merchandising. ξ106 Directors such as John Ford redefined the image of the American Old West and history, and, like others such as John Huston, broadened the possibilities of cinema with location shooting, with great influence on subsequent directors. The industry enjoyed its golden years, in what is commonly referred to as the "Golden Age of Hollywood", from the early sound period until the early 1960s, with screen actors such as John Wayne and Marilyn Monroe becoming iconic figures. In the 1970s, film directors such as Martin Scorsese, Francis Ford Coppola and Robert Altman were a vital component in what became known as "New Hollywood" or the "Hollywood Renaissance", ξ107 grittier films influenced by French and Italian realist pictures of the post-war period. ξ108 Since, directors such as Steven Spielberg, George Lucas and James Cameron have gained renown for their blockbuster films, often characterized by high production costs, and in return, high earnings at the box office, with Cameron's Avatar (2009) earning more than $2 billion. ξ109
Notable films topping the American Film Institute's AFI 100 list include Orson Welles's Citizen Kane (1941), which is frequently cited as the greatest film of all time, Village Voice: 100 Best Films of the 20th century (2001). Filmsite. Casablanca (1942), The Godfather (1972), Gone with the Wind (1939), Lawrence of Arabia (1962), The Wizard of Oz (1939), The Graduate (1967), On the Waterfront (1954), Schindler's List (1993), Singin' in the Rain (1952), It's a Wonderful Life (1946) and Sunset Boulevard (1950). The Academy Awards, popularly known as the Oscars, have been held annually by the Academy of Motion Picture Arts and Sciences since 1929, ξ110 and the Golden Globe Awards have been held annually since January 1944. ξ111
The market for professional sports in the United States is roughly $69 billion, roughly 50% larger than that of all of Europe, the Middle East, and Africa combined. Global sports market to hit $141 billion in 2012. Reuters. Retrieved on July 24, 2013. Baseball has been regarded as the national sport since the late 19th century, with Major League Baseball (MLB) being the top league, while American football is now by several measures the most popular spectator sport, MacCambridge, Michael (2004). America's Game: The Epic Story of How Pro Football Captured a Nation. New York: Random House. ISBN 0-375-50454-0. with the National Football League (NFL) having the highest average attendance of any sports league in the world and a Super Bowl watched by millions globally. Basketball and ice hockey are the country's next two leading professional team sports, with the top leagues being the National Basketball Association (NBA) and the National Hockey League (NHL). These four major sports, when played professionally, each occupy a season at different, but overlapping, times of the year. College football and basketball attract large audiences.
Boxing and horse racing were once the most watched , but they have been eclipsed by golf and auto racing, particularly NASCAR. In the 21st century, televised mixed martial arts has also gained a strong following of regular viewers. While soccer is less popular in the United States compared to many other nations, the country hosted the 1994 FIFA World Cup, the men's national soccer team has been to the past six World Cups. The United States women's national soccer team won the women's world cup three times, highest in the world. Major League Soccer is the professional soccer league in the United States.
Mass transit accounts for 9% of total U.S. work trips. Transport of goods by rail is extensive, though relatively low numbers of passengers (approximately 31 million annually) use intercity rail to travel, partly because of the low population density throughout much of the U.S. interior. However, ridership on Amtrak, the national intercity passenger rail system, grew by almost 37% between 2000 and 2010. Also, light rail development has increased in recent years. Bicycle usage for work commutes is minimal.
The civil airline industry is entirely privately owned and has been largely deregulated since 1978, while [[List of airports in the United States| most major airports]] are publicly owned. The three largest airlines in the world by passengers carried are U.S.-based; American Airlines is number one after its 2013 acquisition by US Airways. Of the world's 30 busiest passenger airports, 12 are in the United States, including the busiest, Hartsfield–Jackson Atlanta International Airport.
For decades, nuclear power has played a limited role relative to many other developed countries, in part because of public perception in the wake of a 1979 accident. In 2007, several applications for new nuclear plants were filed. The United States has 27% of global coal reserves. It is the world's largest producer of natural gas and crude oil.
Cities, utilities, state governments and the federal government have addressed the above issues in various ways. To keep pace with demand from an increasing population, utilities traditionally have augmented supplies. However, faced with increasing costs and droughts, water conservation is beginning to receive more attention and is being supported through the federal WaterSense program. The reuse of treated wastewater for non-potable uses is also becoming increasingly common. Pollution through wastewater discharges, a major issue in the 1960s, has been brought largely under control.
Most Americans are served by publicly owned water and sewer utilities. Eleven percent of Americans receive water from private (so-called "investor-owned") utilities. In rural areas, cooperatives often provide drinking water. Finally, up to 15 percent of Americans are served by their own wells. Water supply and wastewater systems are regulated by state governments and the federal government. At the state level, health and environmental regulation is entrusted to the corresponding state-level departments. or Public Service Commissions regulate tariffs charged by private utilities. In some states they also regulate tariffs by public utilities. At the federal level, drinking water quality and wastewater discharges are regulated by the United States Environmental Protection Agency, which also provides funding to utilities through .
Water consumption in the United States is more than double that in Central Europe, with large variations among the states. In 2002 the average American family spent $474 on water and sewerage charges,, p. 11; quoting: which is about the same level as in Europe. The median household spent about 1.1 percent of its income on water and sewerage.Calculated based on a median household income of $42,409 in 2002, as quoted by
In 1876, Alexander Graham Bell was awarded the first U.S. patent for the telephone. Thomas Edison's research laboratory, one of the first of its kind, developed the phonograph, the first long-lasting light bulb, and the first viable movie camera. The latter lead to emergence of the worldwide entertainment industry. In the early 20th century, the automobile companies of Ransom E. Olds and Henry Ford popularized the assembly line. The Wright brothers, in 1903, made the first sustained and controlled heavier-than-air powered flight.
The rise of Nazism in the 1930s led many European scientists, including Albert Einstein, Enrico Fermi, and John von Neumann, to immigrate to the United States. ξ114 During World War II, the Manhattan Project developed nuclear weapons, ushering in the Atomic Age, while the Space Race produced rapid advances in rocketry, materials science, and aeronautics.
The invention of the transistor in the 1950s, a key active component in practically all modern electronics, led to many technological developments and a significant expansion of the U.S. technology industry. Goodheart July 2, 2006Silicon Valley: 110 Year Renaissance, McLaughlin, Weimers, Winslow 2008. ξ115 This in turn led to the establishment of many new technology companies and regions around the county such as Silicon Valley in California. Advancements by American microprocessor companies such as Advanced Micro Devices (AMD), and Intel along with both computer software and hardware companies that include Adobe Systems, Apple Computer, IBM, GNU-Linux, Microsoft, and Sun Microsystems created and popularized the personal computer. The ARPANET was developed in the 1960s to meet Defense Department requirements, and became the first of a series of networks which evolved into the Internet. ξ116
These advancements then lead to greater personalization of technology for individual use. , 83.8% of American households owned at least one computer, and 73.3% had high-speed Internet service. 91% of Americans also own a mobile phone . The United States ranks highly with regard to freedom of use of the internet.
In the 21st century, 64% of research and development funding comes from the private sector. The United States leads the world in scientific research papers and impact factor.
Approximately one-third of the adult population is obese and an additional third is overweight; the obesity rate, the highest in the industrialized world, has more than doubled in the last quarter-century. ξ117 Obesity-related type 2 diabetes is considered epidemic by health care professionals. The infant mortality rate of 6.17 per thousand places the United States 169th highest out of 224 countries, with the 224th country having the lowest mortality rate.
In 2010, coronary artery disease, lung cancer, stroke, , and traffic accidents caused the most years of life lost in the U.S. Low back pain, depression, , neck pain, and anxiety caused the most years lost to disability. The most deleterious were poor diet, tobacco smoking, obesity, high blood pressure, high blood sugar, physical inactivity, and alcohol use. Alzheimer's disease, drug abuse, kidney disease and cancer, and falls caused the most additional years of life lost over their age-adjusted 1990 per-capita rates. U.S. teenage pregnancy and abortion rates are substantially higher than in other Western nations, especially among blacks and Hispanics. U.S. underage drinking among teenagers is among the lowest in industrialized nations.
The U.S. is a global leader in medical innovation. America solely developed or contributed significantly to 9 of the top 10 most important medical innovations since 1975 as ranked by a 2001 poll of physicians, while the EU and Switzerland together contributed to five. Since 1966, more Americans have received the Nobel Prize in Medicine than the rest of the world combined. From 1989 to 2002, four times more money was invested in private biotechnology companies in America than in Europe. The U.S. health-care system far outspends any other nation, measured in both per capita spending and percentage of GDP. OECD Health Data 2000: A Comparative Analysis of 29 Countries CD-ROM (OECD: Paris, 2000). See also
Health-care coverage in the United States is a combination of public and private efforts and is not universal. In 2014, 13.4% of the population did not carry health insurance. The subject of uninsured and underinsured Americans is a major political issue. In 2006, Massachusetts became the first state to mandate universal health insurance. Federal legislation passed in early 2010 would ostensibly create a near-universal health insurance system around the country by 2014, though the bill and its ultimate impact are issues of controversy.
In 1998, the number of U.S. commercial radio stations had grown to 4,793 AM stations and 5,662 FM stations. In addition, there are 1,460 public radio stations. Most of these stations are run by universities and public authorities for educational purposes and are financed by public or private funds, subscriptions and corporate underwriting. Much public-radio broadcasting is supplied by NPR (formerly National Public Radio). NPR was incorporated in February 1970 under the Public Broadcasting Act of 1967; its television counterpart, PBS, was also created by the same legislation. (NPR and PBS are operated separately from each other.) , there are 15,433 licensed full-power radio stations in the US according to the U.S. Federal Communications Commission (FCC).
Well-known newspapers are The New York Times, USA Today and The Wall Street Journal. Although the cost of publishing has increased over the years, the price of newspapers has generally remained low, forcing newspapers to rely more on advertising revenue and on articles provided by a major wire service, such as the Associated Press or Reuters, for their national and world coverage. With very few exceptions, all the newspapers in the U.S. are privately owned, either by large chains such as Gannett or McClatchy, which own dozens or even hundreds of newspapers; by small chains that own a handful of papers; or in a situation that is increasingly rare, by individuals or families. Major cities often have "alternative weeklies" to complement the mainstream daily papers, for example, New York City's The Village Voice or Los Angeles' LA Weekly, to name two of the best-known. Major cities may also support a local business journal, trade papers relating to local industries, and papers for local ethnic and social groups. Early versions of the American newspaper comic strip and the American comic book began appearing in the 19th century. In 1938, Superman, the comic book superhero of DC Comics, developed into an American icon. ξ118 Aside from and search engines, the most popular websites are Facebook, YouTube, Wikipedia, Amazon, eBay, and Twitter.
In Spanish, the second most widely spoken mother tongue behind English, more than 800 publications are published.