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History of Colorado

History of the U.S. State of Colorado

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Through Human migration, Recorded history and Great Plains

When explorers, early trappers, 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.

European exploration

In 1787 Juan Bautista de Anza established the settlement of San Carlos near present-day Pueblo, Colorado, but it quickly failed. This was the only Spanish attempt to create a settlement north of the Arkansas River. Colorado became part of the Spanish province of Santa Fe de Nuevo México as part of the Viceroyalty of New Spain. The Spaniards traded with Native Americans who lived there and established the Comercio Comanchero (Comanche Trade) among the Spanish settlements and the Native Americans.

The Pike Expedition (July 15, 1806 – July 1, 1807) was a military party sent out by President Thomas Jefferson and authorized by the United States government to explore the south and west of the recent Louisiana Purchase. It was led by United States Army Lieutenant Zebulon Pike, Jr. who was promoted to captain during the trip. It was the first official American effort to explore the western Great Plains and the Rocky Mountains in present-day Colorado. Pike contacted several Native American tribes during his travels and informed them that the U.S. now claimed their territory. The expedition documented the United States' discovery of Tava which was later renamed Pikes Peak in honor of Pike.

In 1819, the United States ceded its claim to the land south and west of the Arkansas River to Spain with the Adams-Onís Treaty, at the same time purchasing Florida. Mexico won its independence with the Treaty of Córdoba signed on August 24, 1821, and assumed the territorial claims of Spain.

During the early history of the Arkansas Valley in Colorado from 1832 to 1856, traders, trappers, and settlers established trading posts and small settlements along the Arkansas River, and on the South Platte near the Front Range. Prominent among these were Bent's Fort and Fort Pueblo on the Arkansas and Fort Saint Vrain on the South Platte. The trade was mainly native Cheyenne and Arapaho who sold buffalo and other furs for refined goods such as alcohol from the United States. Nearly all the construction was done by Mexicans who traveled to the valley for work. The Arkansas river was not navigable so wagon trails were used to transport goods to and from Missouri and Kansas. The Arapaho continued to occupy and influence the area on the Front Range near the Platte River. The Ute retained territorial control over the rest of what is now Colorado.

South of the Arkansas Valley, the Mexican government had planned to settle the land via a land grant system in which a small number of individuals where granted ownership of millions of acres of land with the expectation that they would lead settlement. However these settlements were largely unsuccessful because the Utes continued to control the land until 1851.

In 1846 the United States went to war with Mexico. Mexico's defeat forced the nation to relinquish its northern territories by the Treaty of Guadalupe Hidalgo in 1848. This opened the Southern Rocky Mountains to American settlement, including what is now the lower portion of Colorado. The newly gained land was divided into the Territory of New Mexico and the Territory of Utah, both organized in 1850, and the Territory of Kansas and the Territory of Nebraska, organized in 1854.

On April 9, 1851, Hispanic settlers from Taos, New Mexico, settled the village of San Luis de la Culebra, then in the New Mexico Territory, but now Colorado's first permanent European settlement.

The 1851 Treaty of Fort Laramie formed a basis for relations with the local Arapaho and Cheyenne tribes. However the immigrants did not respect the terms of treaty, treated natives unjustly, and directly provoked native people which lead to tensions.

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