Assyria was a major Mesopotamian East Semitic kingdom, and empire, of the Ancient Near East, existing as an independent state for a period of approximately nineteen centuries from c. 2500 BC to 605 BC, spanning the Early Bronze Age through to the late Iron Age. For a further thirteen centuries, from the end of the 7th century BC to the mid-7th century AD, it survived as a geo-political entity, for the most part ruled by foreign powers, although a number of small Neo-Assyrian states such as Assur, Adiabene, ..