Help! Mesopotamia translates to "the land between two rivers" - the Tigris and the Euphrates. Why was this location crucial to the development of a civilization? A: The rich soil and the proximity to fresh water created a natural area for crop irrigation. B: The nomadic tribes settled in the area after migrating from Africa. C: The Egyptians had left structures the Mesopotamians could use for housing. D: They were close to the ocean which provided an abundant food source.