This tribe built things like dams, ditches, and canals to trap the rain from the tops of mesa and channel to gardens on canyon floor. Their houses were built with adobe and stone. The houses they built had many stories, like an apartment building. They built roads for trading networks, the craftsmen made jewelry, pottery and wove baskets. This tribe influenced art and architecture of groups called Hopi and Zuni.
This tribe lived in Ohio Valley around 700Bc. Adena mostly grew squash, sunflowers, gourds, and barely. They made copper jewelry and fine pottery.
Hopewell Tribe lived in Ohio Valley around 300BC. They made mounds that were 40ft tall and 700ft wide. Telling by the artifacts found, the Hopewell tribe had an extensive trade network system. The Hopewell and Adena tribes are also referred to as "Mound Builders".
Lived in Mississippi Valley around 800Ad. They owned plants that could be used for food and when added to things like maize and beans had an increase in population. When the population increased the tribe needed more land. More land had results in many cities with up to 10,000 people. The largest was Cahokia. In the center of Cahokia was a ginormous mound about 100ft tall and the base was more 14 acres long, and surrounding this mound was 120 smaller mounds.