1) Some Ancient Native Americans
Found on
https://www.crosswordclues.com/clue/moundbuilders
The moundbuilders is a name given to an American prehistoric race the principal remains of which are extensive earthworks found in the Mississippi Valley extending from the lakes southward to the gulf. Many of these are clearly defensive works or places of sepulture. Fort Hill, Ohio, has a line of circumvallation about four miles in extent. These d...
Found on
http://www.probertencyclopaedia.com/browse/CXMA.HTM
No exact match found.
