Answer:
Cahokia
Explanation:
Cahokia or Cachokia, is an Amerindian archaeological site located near Collinsville (Illinois), on the Mississippi River Plain in the southwest of that state, near the city of St. Louis (Missouri). It is formed by a series of mounds or artificial earth mounds. Cahokia is the largest site related to the Mississippian culture, which developed an advanced society in eastern North America before the arrival of Europeans. It is estimated that Cahokia was founded four centuries before the arrival of Christopher Columbus in America.
