It gave societies water to grow crops in non or dry growing seasons. This gave them food and therefore let society flourish in places they couldn't before.
How does the interaction of people groups affect the growth of societies?
The societies were able to trade surplus goods with other societies.
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No.
because of a source of movment
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How does the interaction of people groups affect the growth of societies?
It makes societies stay on the ground.
no
There was no struggle for farmland in Virginia.