A cultural grouping named after an archaeologically unlocated site in the northern part of Sumer (possibly Babylon) that became the capital city of the Akkadian state founded by Sargon in c.2370 bc. Under Sargon and his grandson Naram‐Sin the dynasty extended the city‐state into a larger empire covering northern and southern Mesopotamia as well as the neighbouring area of Elam. The Semitic language that was associated with the Akkadian Empire is also called Akkadian and replaced Sumerian as the official language of the region. It was also written in cuneiform script which had originally been devised to record the unrelated and quite different Sumerian language. Through the later 3rd millennium bc the Akkadian language became extensively used throughout the Near East and into Anatolia and Egypt, in the 2nd and 1st millennia bc becoming Assyrian and Babylonian.