Term: Mississippian culture (archaeology)
Definition: late Woodland culture (950-1300 A.D.) centered on Cahokia, Illinois, typified by corn horticulture and the first fortified villages; its northern outposts included Aztalan and Trempealeau Bluffs in Wisconsin. A detailed article is available at Turning Points in Wisconsin History.
[Source: Theler, James L. and Robert F. Boszhardt. Twelve Millennia: Archaeology of the Upper Mississippi River (Iowa City: University of Iowa Press, 2003).]