www.bia.gov A federal Indian reservation is an area of land reserved for a tribe or tribes under treaty or other agreement with the United States, executive order, or federal statute or administrative action as permanent tribal homelands, and where the federal government holds title to the land in trust on behalf of the tribe.
treatiesmatter.org Treaties recognize Indian tribes as sovereign nations that exercise exclusive authority over all peoples and activities within their territories. They are as valid today as on the day they were signed and ratified.