Charles Foster Kent, Biblical Geography and History
“ Conditions in the Tigris-Euphrates Valley. Physical conditions in the Tigris-Euphrates valley were in many ways similar to those along the Nile. A warm but invigorating climate, fertile, alluvial soil, deposited by the great rivers and renewed each year by the floods, and the protection of the desert on the west favored the development of a virile civilization, as early if not earlier than that of Egypt. Starting from the same northern mountains, the two great rivers find their way to the Persian Gulf by widely different courses. ”
