<span>They were the only and first civilization not to be near a river, because they were in a tropical forest. Rain was almost daily and that's how they got their water.
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Trade increased throughout India and other surrounding countries. Also religions spread (religions such as Confucianism, Hinduism, Buddhism, and some Islamic practices).
Answer:The northern economy relied on manufacturing and the agricultural southern economy depended on the production of cotton. The desire of southerners for unpaid workers to pick the valuable cotton strengthened their need for slavery.
Explanation:
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