Tigris

Why did the earliest civilizations arise in river valleys? Plant domestication set the scene for the emergence of civilization, and if there is one thing plants cannot live without, it is water. Most people in early food producing societies lived in villages near rivers. Mesopotamia, the first civilization, was formed between the Tigris and Euphrates Rivers. There, not much rain fell, so they used water from the rivers to cultivate the crops. Its warm climate called for good soil, and the Nile regularly deposited silt.
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