Both peoples were renowned for their military prowess, and both provided a headache for U.S. settlement of the West. Which tribal group was more powerful? As in, which one held out longer, occupied more territory, had a better chance of retaining some sovereignty or at least autonomy?
Are there any other Native American nations that were as powerful in the West? The Lakota/Sioux are usually mentioned, though they're further north, and I suppose the Navajo retained a lot of territory.
I'm also wondering if it's possible if an Indian Territory of the west could have created for any of these nations, since the historical one hosted many of the most powerful and prestigious tribes of the East.