One of the American Indian tribes are Unitas
This is arguable. If you only include the United States, then the Cherokee have the largest registered population (as of the last census I saw). If you include North America then the Chippewa...
A "Tribe" is defined (generally) as a distinct body politic of people. Definitions of this vary from source to source.
Over 500 different tribes
Arapahoe. Cheyenne. Cherokee. Creek. Chickasaw. Seminole. Navajo. Mohawk. Hopi Navajo. Inuit. Aleut. Sioux. Crow. Ute.
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