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Why, since the ear of the earliest societies, have population centers sprung up in coastal regions and river valleys?

2 Answers

4 votes
Since there is a water source near, and they're plants and animals.
User Paramasivan
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Because when it rains the rivers flood the valleys making the soil fertile.

If it helps you it is like making mother nature do the watering for you.
User Shakti Sharma
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