Mound Builders were prehistoric American Indians, named for their practice of burying their dead in large mounds. Beginning about three thousand years ago, they built extensive earthworks from the Great Lakes down through the Mississippi River Valley and into the Gulf of Mexico region.

What is a mound Builder meaning?

: a member of a prehistoric American Indian people whose extensive earthworks are found from the Great Lakes down the Mississippi River valley to the Gulf of Mexico.

What was the purpose of Mound Builders?

500 B.C. to c. 1650 A.D., the Adena, Hopewell, and Fort Ancient Native American cultures built mounds and enclosures in the Ohio River Valley for burial, religious, and, occasionally, defensive purposes. They often built their mounds on high cliffs or bluffs for dramatic effect, or in fertile river valleys.