What geographic area did the Fertile Crescent span? A. across the north African coast
B. between the Tigris River and Euphrates River
c. along the valleys of the Indus River and Ganges River
D. from the eastern shore of the Mediterranean to the Persian Gulf

B:Between the Tigris and Euphrates

Explanation:

Because of this region's relatively abundant access to water, the earliest civilizations were established in the Fertile Crescent, including the Sumerians. Its area covers what are now southern Iraq, Syria, Lebanon, Jordan, Palestine, Israel, Egypt, and parts of Turkey and Iran. The Fertile Crescent is bounded on the west by the Mediterranean Sea and on the East by the Persian Gulf. The Tigris and Euphrates rivers flow through the heart of the Fertile Crescent. The region historically contained unusually fertile soil and productive freshwater and brackish wetlands.

they were byzantines