How did historical and political developments lead to the presence of two tribal governments on the Wind River Reservation? Respond in one or more paragraphs, using specific examples to support your answer.

The only Indian reservation in Wyoming, the Wind River Indian Reservation was established with the Treaty of Fort Bridger in 1868. Originally home to the Eastern Shoshone Tribe, the Northern Arapaho Tribe was moved to the reservation in 1878 where they were welcomed by Chief Washakie of the Eastern Shoshone. A traditionally nomadic tribe for thousands of years, the Eastern Shoshone traveled throughout 16 states from central Wyoming to the west coast. Archealogical evidence reveals that the tribe called parts of Wyoming home for millenia. Today, both tribes share their cultures, history and traditions through oral storytelling, songs,dances and much more.