What Indigenous territories am I in?

Montana is a landlocked state in the Mountain West subregion of the Western United States. It borders Idaho to the west, North Dakota to the east, South Dakota to the southeast, Wyoming to the south, and the Canadian provinces of Alberta, British Columbia, and Saskatchewan to the north. It is the fourth-largest state by area, the eighth-least populous state, and the third-least densely populated state. Its capital is Helena, while the most populous city is Billings. The western half of the state contains numerous mountain ranges, while the eastern half is characterized by western prairie terrain and badlands, with smaller mountain ranges found throughout the state.

Indigenous rights are those rights that exist in recognition of the specific condition of the Indigenous peoples. This includes not only the most basic human rights of physical survival and integrity, but also the rights over their land, language, religion, and other elements of cultural heritage that are a part of their existence and identity as a people. This can be used as an expression for advocacy of social organizations, or form a part of the national law in establishing the relation between a government and the right of self-determination among its Indigenous people, or in international law as a protection against violation of Indigenous rights by actions of governments or groups of private interests.