the Moundbuilders
noun/ðə ˈmaʊndbɪldəz/
/ðə ˈmaʊndbɪldərz/
[plural]- groups of people living in prehistoric (= from before history was written down) North America who built mounds (= raised masses of earth). These were used for graves and as the bases for religious temples and other important buildings. Well-known mounds that survive include those at Moundville, Alabama, and the Serpent Mound in Adams County, Ohio.
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the Moundbuilders