Review the map. A map titled Early Population Centers in North America. Northeast, Southeast, Midwest, Southwest, and Northwest regions are labeled. Built mounds are found around the Mississippi River and slightly to the east.

According to the map, early American Indians built mounds in which regions?

Southwest and Midwest
Midwest and Southeast
Northwest and Southwest
Southeast and Southwest

I think it's Southeast and Southwest

Explanation:

these civilizations were located around fertile rivers, where they could produce an abundance of crops

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explanation: