Why are river valleys so important

river valleys provide water for both irrigation and drinking, transportation, fish for eating, and often provide silt, a fertile soil found in many rivers.

Explanation: i learned this in 6th grade i hope it’s what your looking for!

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

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

all cities have a governor

all cities are in states or provnies then country

all cities have people

difference

some are rich

some are poor

some are average