MHA Nation: Mandan, Hidatsa & Arikara Nation – Three Affiliated Tribes

The Mandan, Hidatsa and Arikara Nation, also known as the Three Affiliated Tribes, is located on the Fort Berthold Indian Reservation in central North Dakota. The reservation stretches across 988,000 acres of wide-open plains and grasslands, and along both sides of the longest river in North America, the majestic Missouri River, or its native name of “Awati.”