What are two reasons people settled in the river valley region

There was a local water supply for drinking, washing, cooking and transport. dry land, so that people could build on areas that don't flood. a defendable site, eg a hilltop or river bend, to protect from attackers. good farm land with fertile soils, so people could grow crops.

Explanation:

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yes peace and development are complementary to each other since they both undergo a great deal of getting where they want to go whether its peace in general and. development