Which was the first step in the development of civilizations in both the egyptian and mesopotamian societies?

A. development of irrigation

B. pastoral behavior

C. switch to monotheism

D. overthrow of a government

The correct answer is

A. development of irrigation

They needed irrigation to grow crops to create a great civilization. The Egyptians used Nile as their main source of water and fertility while the Mesopotamian societies used Tigris and Euphrates. The name itself means between two rivers, meso and potamia.