the region in the Middle East where the civilizations of the Middle East and the Mediterranean basin began. The term was popularized by the American Orientalist James Henry Breasted (Breasted, James Henry).

The Fertile Crescent (see map-->) includes a roughly crescent-shaped area of relatively fertile land which probably had a more moderate, agriculturally productive climate in the past than today, especially in Mesopotamia and the Nile valley. Situated between the Arabian Desert to the south and the mountains of Armenia to the north, it extends from Babylonia and adjacent Susiana (the southwestern province of Persia) up the Tigris and Euphrates rivers to Assyria. From the Zagros Mountains east of Assyria it continues westward over Syria to the Mediterranean and extends southward to southern Palestine. The Nile valley of Egypt is often included as a further extension, especially since the short interruption in Sinai is no greater than similar desert breaks that disturb its continuity in Mesopotamia and Syria. Throughout the region irrigation (irrigation and drainage) is necessary for the best agricultural results and, indeed, is often essential to any farming at all.