How did the fertile crescent affect the development of early civilization

The four river valley civilizations were the Tigris & Euphrates Valleys, the Nile River Valley, the Indus River Valley, and the Yellow River Valley. Civilizations developedaround rivers because their waters provided places to hunt and fish. Also, as the rivers flooded, the lands around them became fertile.Mar 2, 2015

The articles created a national government composed of a congress, which had the power to declare war, sign treaties, make alliances and more.