The document summarizes the early Mesopotamian civilization that developed between the Tigris and Euphrates Rivers. It emerged around 3000 BC and was composed of independent city-states like Ur, Uruk, and Kish that each had their own government and patron god. Sargon of Akkad later created the world's first empire in 2350 BC by conquering the region. The Babylonian Empire then took control around 2000 BC, with King Hammurabi establishing one of the first legal codes. Mesopotamian culture developed writing, the Epic of Gilgamesh, and made advances in religion, society, and government.