Who began to invade Sumerians cities around 2900 bc?

Around 2900 BC, the Sumerian cities began to face invasions from the Akkadians, a Semitic people from the north. Led by leaders such as Sargon of Akkad, they sought to expand their territory and influence over the rich city-states of Sumer. This period marked significant cultural and political shifts in Mesopotamia, as the Akkadian Empire eventually rose to prominence, blending with Sumerian civilization.