Mesopotamia was well-suited for the rise of early civilizations due to its fertile geography between the Tigris and Euphrates Rivers. Sumer emerged as the first civilization in Mesopotamia around 3,000 BC, with cities organized around temples, ziggurats, and walls. Sumer developed systems of irrigation and government to manage seasonal flooding. Writing, science, and culture flourished in the independent city-states until they were conquered by successive empires like Akkad and Babylon, which adopted aspects of Sumerian civilization while ruling through military dominance and administration.