Which best explains why floodplains encouraged settlement in the Fertile Crescent? A) The floodplains prevented seasonal droughts. B)The floodplains brought warmer temperatures. C) The floodplains exposed stone used for building. D) The floodplains provided fertile soil for growing crops.

D) The floodplains provided fertile soil for growing crops.

Explanation:

The floodplains of the regions where the first civilizations emerged were very fertile because the rivers brought important nutrients with them when they flooded.

This is why the first civilizations all emerged around major rivers: Mesopotamia around the Tigris and the Euphrates, Ancient Egypt around the Nile, China around the Yellow River, and the Ancient Indian Civilization around the Hindus.

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