Complex sentence: The Northern Arapaho Nation has lived since 1878, with the Eastern Shoshone on the Wind River Reservation, the seventh largest reservation in the United jues are indiansihygh Southern Arapaho Tribe lives with the Southern Cheyenne in Oklahoma.
Split into simpler sentences: The Northern Arapaho Nation has lived since 1878, with the Eastern Shoshone on the Wind River Reservation, the seventh largest reservation in the United States. The Southern Arapaho Tribe lives with the Southern Cheyenne in Oklahoma.