Prehistoric agriculture on the Great Plains
Agriculture on the precontact Great Plains describes the agriculture of the Indigenous peoples of the Great Plains of the United States and southern Canada in the Pre-Columbian era and before extensive contact with European explorers, which in most areas occurred by 1750. The most important crop was maize, usually planted along with beans and squash, including pumpkins.
Source: Wikipedia — Prehistoric agriculture on the Great Plains (CC BY-SA 4.0)