Ancient Natives from North America
Hopewell (known as the Eastern Woodlands people)
Lived in the Ohio valley in 300 BC. Made mounds that were 40 ft. high and 100 ft. wide. A extensive trade network. Referred to as " Mound Builders ".
Mississippians
Lived in the Mississippi valley in 800 AD. Had plants that was used on food and when added maize and beans had a increase in population. Increasing of population lead to the need for more land, so their were a lot of cities up to 10,000 people. In the center of Cahokia was a massive mound to up to 100 ft. high and a base of 14 acres. Surrounding the giant mound were smaller mounds.