Small city-state again

After the reign of Hammurabi, the whole of southern Mesopotamia came to be known as Babylonia, whereas the north had already coalesced centuries before into Assyria. From this time, Babylon supplanted Nippur and Eridu as the major religious centers of southern Mesopotamia. Hammurabi's empire destabilized after his death. Assyrians defeated and drove out the Babylonians and Amorites. The far south of Mesopotamia broke away, forming the native Sealand Dynasty, and the Elamites appropriated territory in eastern Mesopotamia. The Amorite dynasty remained in power in Babylon, which again became a small city-state.