Flourishing of Cahokia, Mississippian Culture (c. 1080s)

Timeline

1. c. 1081–1085Monks Mound · IllinoisAs the largest prehistoric earthen structure in North America, Monks Mound remained the symbol of Cahokia's political and religious power. Chiefly elites conducted astronomical observations, seasonal ceremonies, and tribute distribution atop the mound, maintaining rule over surrounding satellite settlements.
2. c. 1086–1090Mississippi River basin trade corridor · Mississippi River basinCahokia exchanged shell, copper, obsidian, and salt through the Mississippi River and its tributaries; craft districts produced fine pottery and stone tools, and archaeological remains show that economic ties with distant settlements reached their peak during this period.