Final answer:
Cahokia was a major urban settlement of the Hopewell peoples in the Mississippi River valley, known for its political and religious power, trade connections, and worship practices.
Step-by-step explanation:
The Cahokia site was a major urban settlement of the Hopewell peoples in the Mississippi River valley. Located in present-day Illinois, Cahokia was a walled complex with 120 mounds and a population that may have reached 30,000 people. The largest mound, called Monk's Mound, covered 13.8 acres at the base and housed a temple or the residence of the paramount chief of the Cahokia chiefdom. Cahokia was known for its political and religious power, trade connections, and the worship of the sun, moon, stars, and the Great Serpent.