Cuneiform tablet containing an administrative account of barley distribution, ca. 3100-2900 B.C.E.
Which of the following geographic features was a primary factor that enabled the Sumerians to farm crops such as the barley mentioned in the administrative account shown above?
|(A)||The river valleys of the Tigris and Euphrates|
|(B)||The mountains of the Hindu Kush|
|(C)||The Nile Delta|
|(D)||The deserts of the Arabian peninsula|