The Ponca people are a nation primarily located in the Great Plains of North America that share a common Ponca culture, history, and language, identified with two Indigenous nations: the Ponca Tribe of Indians of Oklahoma or the Ponca Tribe of Nebraska.

The Osage Nation is a Midwestern American tribe of the Great Plains. The tribe developed in the Ohio and Mississippi river valleys around 700 B.C. along with other groups of its language family. They migrated west after the 17th century, settling near the confluence of the Missouri and Mississippi rivers, as a result of Iroquois expansion into the Ohio Country in the aftermath of the Beaver Wars.