<Dd> This article covers Colorado's historic period, when events were recorded . For Colorado's prehistoric history, go to Prehistory of Colorado . </Dd> <P> The human history of Colorado extends back more than 13,000 years . The region that is today the state of Colorado was first inhabited by American Indians . The Lindenmeier Site in Larimer County, Colorado, is a Folsom culture archaeological site with artifacts dating from approximately 8710 BCE . </P> <P> When explorers, early trappers and hunters and gold miners visited and settled in Colorado, the state was populated by American Indian nations . Westward expansion brought European settlers to the area and Colorado's recorded history began with treaties and wars with Mexico and American Indian nations to gain territorial lands to support the transcontinental migration . In the early days of the Colorado gold rush, Colorado was a Territory of Kansas and Territory of Jefferson . On August 1, 1876, Colorado was admitted as a state, maintaining its territorial borders . </P> <Ul> <Li> Ancient Pueblo Peoples--A diverse group of peoples that lived in the valleys and mesas of the Colorado Plateau </Li> <Li> Apache Nation--An Athabaskan - speaking nation that lived in the Great Plains in the 18th century, then migrated southward to Texas, New Mexico, and Arizona, leaving a void on the plains that was filled by the Arapaho and Cheyenne from the east . </Li> <Li> Arapaho Nation--An Algonquian - speaking nation that migrated westward to the base of the Rocky Mountains in the late 19th century and settled on the piedmont and the eastern plains . They were relocated entirely out of Colorado in 1865 following the Colorado War . </Li> <Li> Cheyenne Nation--An Algonquian - speaking nation very closely related to the Arapaho . Like the Arapaho, they migrated westward in the 18th century to the base of the Rockies . They often lived in bands interspersed among the Arapaho, and were also relocated out of Colorado in the 1860s . </Li> <Li> Comanche Nation--A Numic - speaking nation that lived on the High Plains of southeastern Colorado . Closely related to the Shoshone, they acquired the horse from the Spaniards and roamed the southern Great Plains . The Comanche were removed to Indian territory . </Li> <Li> Shoshone Nation--A Numic - speaking nation that inhabited intermountain valleys along the north edge of the state, especially in the Yampa River valley, up through the late 19th century . Areas included North Park and Browns Park . </Li> <Li> Ute Nation--A Numic - speaking nation that has lived in the Southern and the Western Rocky Mountains for many centuries . Their leaders were Chief Ouray and his wife Chipeta . They often clashed with the Arapaho and Cheyenne, and resisted the encroachment of these nations into the mountains . Until the 1880s, the Ute controlled nearly all of Colorado west of the continental divide, a situation that eroded after the silver boom of 1879 . After clashing with white settlers in the 1880s in the Meeker Massacre, they were nearly entirely relocated out of the state into Utah, except for two small reservations in southwestern Colorado . </Li> </Ul>

Who owned colorado before it became a state
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