Verified Answer :

Xzibition

Crops were needed as a surplus so it could be easier to create trades between cultures.

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Answer:

Crops

Explanation:

Agriculture was the force that changed society and human development. Humans stopped being nomads to settle in a place because of the ability to plant crops and produce a food surplus.

Food surplus made possible the development of cities and civilizations also made possible to start trade with other civilizations since they had food surplus.

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