Answer :
Cahokia was a city that, at its peak from A.D. 1050-1200, was larger than many European cities, including London.
Approximately 1050–1350 CE, a pre-Columbian Native American city called Cahokia Mounds State Historic Site was located just over the Mississippi River from present-day St. Louis, Missouri. Between East St. Louis and Collinsville in southwest Illinois sits this historic park.
There are roughly 80 man-made mounds in the park, which is about 3.5 square miles (9 km2) in size, although the old city was considerably bigger.
The city had over 120 earthworks in a variety of sizes, styles, and purposes at its height, which occurred around 1100 CE, and it was about 6 square miles (16 km2) in size.
The Mississippian culture, which advanced cultures across most of what is now the Central and Southeastern United States, more than 1,000 years before European contact, had its largest and most significant urban city at Cahokia. [
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