What army defeated all city-state of sumer and conquered northern Mesopotamian?

The Akkadian Empire, led by Sargon of Akkad, defeated the various city-states of Sumer and conquered northern Mesopotamia around the 24th century BCE. This military campaign unified the region under a centralized rule, marking one of the world's first empires. The Akkadians assimilated Sumerian culture while also spreading their own, significantly influencing the development of Mesopotamian civilization.