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Which factor played a significant role in the development of ancient river valley civilizations?

A Tropical rain forests
B. Petroleum reserves
c. Arid climate
D. Fertile soil

User GargantuChet
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2 Answers

12 votes
12 votes
D fertile soil. .....................
User Carman
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26 votes
26 votes

Answer:

D. Fertile soil

User Dlaliberte
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