Answer: Two rivers, the Tigris and the Euphrates
Explanation: Two rivers, the Tigris and the Euphrates, regularly flooded the region, and the Nile River also runs through part of it. Irrigation and agriculture developed here because of the fertile soil found near these rivers. ... Increased population and demands on the rivers from urbanization have depleted the once-fertile soil. With the Euphrates, it makes up a river system that borders Mesopotamia in the area known as the Fertile Crescent. An important source of both travel and irrigation, the Tigris also has a rich history that dates back to the earliest known civilizations because of its importance to a largely arid region.
