How did the yearly flooding of several of the region's rivers aid early peple

The yearly flooding of several of the region's rivers aided early peoples because the floods supplied water and carried silt. The silt made the land fertile for growing crops.

Explanation:

the structure of state governments are determined by. "state constitutins'

under the us constitution, all state governments are.'republics'

d. the polar jet stream   lies between the polar easterlies and trade winds should be your answer