The Akkadian Empire was the second ancient empire of Mesopotamia, after the long-lived civilization of Sumer. It was centered in the city of Akkad and its surrounding region. The empire united Akkadian (Assyrian and Babylonian) and Sumerian speakers under one rule. The Akkadian Empire exercised influence across Mesopotamia, the Levant, and Anatolia, sending military expeditions as far south as Dilmun and Magan (modern Bahrain and Oman) in the Arabian Peninsula.
During the 3rd millennium BC, there developed a cultural symbiosis between the Sumerians and the Akkadians, which included widespread bilingualism. Akkadian, an East Semitic language, gradually replaced Sumerian as a spoken language somewhere between the 3rd and the 2nd millennia BC (the exact dating being a matter of debate).
The Akkadian Empire reached its political peak between the 24th and 22nd centuries BC, following the conquests by its founder Sargon of Akkad. Under Sargon and his successors, the Akkadian language was briefly imposed on neighboring conquered states such as Elam and Gutium. Akkad is sometimes regarded as the first empire in history, though the meaning of this term is not precise, and there are earlier Sumerian claimants.
After the fall of the Akkadian Empire, the people of Mesopotamia eventually coalesced into two major Akkadian-speaking nations: Assyria in the north, and, a few centuries later, Babylonia in the south.
Understanding of the Akkadian Empire continues to be hampered by the fact that its capital Akkad has not yet been located, despite numerous attempts. Precise dating of archaeological sites is hindered by the fact that there are no clear distinctions between artifact assemblages thought to stem from the preceding Early Dynastic period, and those thought to be Akkadian. Likewise, material that is thought to be Akkadian continues to be in use into the Ur III period.
Many of the more recent insights on the Akkadian Empire have come from excavations in the Upper Khabur area in modern northeastern Syria which was to become a part of Assyria after the fall of Akkad. For example, excavations at Tell Mozan (ancient Urkesh) brought to light a sealing of Tar'am-Agade, a previously unknown daughter of Naram-Sin, who was possibly married to an unidentified local endan (ruler). The excavators at nearby Tell Leilan (ancient Shekhna/Shubat-Enlil) have used the results from their investigations to argue that the Akkadian Empire came to an end due to a sudden drought, the so-called 4.2 kiloyear event. The impact of this climate event on Mesopotamia in general, and on the Akkadian Empire in particular, continues to be hotly debated. More details