Empires of Ancient Mesopotamia - Barbara A. Somervill - Google Books

https://books.google.de/books?id=6cBSI6TioRQC

Mesopotamia, the land between the Tigris and the Euphrates rivers, was the site of the world's first stable civilizations, including Sumer, Babylonia, and Assyria. As people settled permanently along the Fertile Crescent, they built irrigation systems to…