Colorado, state, United States: Early Inhabitants, European Exploration, and U.S. Conquest

Early Inhabitants, European Exploration, and U.S. Conquest

Colorado's earliest inhabitants were the Basket Makers, Native Americans who settled in the mesa country before the beginning of the Christian era. Later people known as cliff dwellers inhabited the area, building their pueblos in canyon walls.

The first European to enter the region was probably the Spanish conquistador Francisco Vásquez de Coronado in the 16th cent. Spain subsequently claimed (1706) the territory, although no Spanish settlements were established there. Part of the area was also claimed for France as part of the Louisiana Territory. At the end of the French and Indian Wars (1763), France secretly ceded the Louisiana Territory, including much of Colorado, to Spain. The French regained the whole area in 1800 by the secret Treaty of San Ildefonso concluded with Spain (see San Ildefonso, Treaty of).

The United States bought the area N of the Arkansas River and E of the Rocky Mts. in the Louisiana Purchase of 1803. The federal government sent expeditions to Colorado which generated some public interest in the new territory, and they explored routes opened earlier by the famous mountain men, trappers, and fur traders who included William H. Ashley, James Bridger, Jedediah S. Smith, Kit Carson, and the Bent brothers. Bent's Fort, in Colorado, was one of the best-known Western trading posts. Settlement in the area did not begin, however, until the United States acquired the remainder of present-day Colorado from Mexico by the Treaty of Guadalupe Hidalgo in 1848.

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