| http://www.w3.org/ns/prov#value | - By the terms of the 1851 Treaty of Fort Laramie between the United States and seven Indian nations, including the Cheyenne and Arapaho,[4] the United States recognized that the Cheyenne and Arapaho held a vast territory encompassing the lands between the North Platte River and Arkansas River and eastward from the Rocky Mountains to western Kansas.
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