Why were early people in north america able to build complex cultures? a. they had learned how to farm. b. they had learned how to start fires. c. they had advanced weapons. d. they had a written language. select the best answer from the choices provided a b c d

A

Explanation:

Because they learned to farm, they no longer were hunter gatherers meaning they had to constantly move around for food. So they had more time and materials to build more complex cultures.

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