Explain how living in a river valley impacted a civilization's food sources.
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Rivers were attractive locations for the first civilizations because they provided a steady supply of drinking water and game, made the land fertile for growing crops, and allowed for easy transportation.

A crescent-shaped region containing the comparatively moist and fertile land of otherwise arid and semi-arid Western Asia, and the Nile Valley and Nile Delta of northeast Africa. Often called the cradle of civilization.

Explanation:

propriety is the answer. hope this !

explanation:

the federal constitution of the united mexican states of 1824 was enacted on october 4 of 1824, after the overthrow of the mexican empire of agustin de iturbide. in the new constitution, the republic took the name of of united mexican states. it was replaced by the federal constitution of the united mexican states in 1857.