The "cradle of civilization" found between the Tigris and Euphrates river. A. Mesopotamia

B. Cairo

C. Roman Empire

D. Iranian Empire

A, Mesopotamia is the region between those rivers. It is also called the Fertile Crescent.

Aregion is an area of land that has common features. these features can be natural, such as climate or landscape. they can also be artificial, such as language or religion. the xinjiang uyghur autonomous region, above, is an area of china inhabited by uyghurs, a muslim group with ethnic ties to turkish people.