Denver ( ) is the capital and most populous city of the U.S. state of Colorado. Officially a consolidated city and county, it is located in the South Platte River valley on the western edge of the High Plains, and is just east of the Front Range of the Rocky Mountains (Rockies). Denver is the 19th-most populous city in the United States and the fifth-most populous state capital, with a population of 715,522 at the 2020 census. The ten-county Denver metropolitan area, with 3.1 million residents, is the 19th-largest metropolitan area in the country and functions as the economic and cultural center of the broader Front Range Urban Corridor.

Denver's downtown district lies about east of the foothills of the Rocky Mountains. Named after James W. Denver, the governor of the Kansas Territory at the time, Denver was founded at the confluence of Cherry Creek and the South Platte River in 1858 during the Gold Rush era. Nicknamed the "Mile High City" because its official elevation is exactly one mile () above sea level, Denver grew beyond its prospecting origins to become the principal commercial and transportation hub for a broad region spanning the Great Plains and Rocky Mountain West. The 105th meridian west of Greenwich, the longitudinal reference for the Mountain Time Zone, passes directly through Denver Union Station.

As the most populous metropolitan area in a radius, Denver is a major cultural hub with a variety of museums and cultural institutions, including the Denver Performing Arts Complex, the Denver Art Museum and the Denver Museum of Nature and Science. Denver has professional sports teams in five leagues and hosts the headquarters of eight Fortune 500 firms.

History

The greater Denver area was inhabited by several Indigenous peoples such as Apaches, Utes, Cheyennes, Comanches, and Arapahoes. By the terms of the 1851 Treaty of Fort Laramie between the United States and various tribes including the Cheyenne and Arapaho,"Treaty of Fort Laramie with Sioux, Etc., 1851." 11 Stats. 749, Sept. 17, 1851. the United States unilaterally defined and recognized Cheyenne and Arapaho territory as ranging from the North Platte River in present-day Wyoming and Nebraska southward to the Arkansas River in present-day Colorado and Kansas. This definition specifically encompasses the land of modern Metropolitan Denver. But the discovery in November 1858 of gold in the Rocky Mountains in ColoradoHoig, Stan. (1980). The Peace Chiefs of the Cheyennes. Norman, OK: University of Oklahoma Press. . (then part of the western Kansas Territory)Greene, Jerome A. (2004). Washita, The Southern Cheyenne and the U.S. Army. Campaigns and Commanders Series, vol. 3. Norman, OK: University of Oklahoma Press. . brought on a gold rush and a consequent flood of white immigration across Cheyenne and Arapaho lands. Colorado territorial officials pressured federal authorities to redefine and reduce the extent of Indian treaty lands.

In the summer of 1858, during the Pike's Peak Gold Rush, a group of gold prospectors from Lawrence, Kansas, established Montana City as a mining town on the banks of the South Platte River in what was then western Kansas Territory, on traditional lands of Cheyenne and Arapaho. This was the first historical settlement in what later became the city of Denver. But the site faded quickly, and by the summer of 1859 it was abandoned in favor of Auraria (named after the gold-mining town of Auraria, Georgia) and St. Charles City.

On November 22, 1858, General William Larimer and Captain Jonathan Cox, both land speculators from eastern Kansas Territory, placed cottonwood logs to stake a claim on the bluff overlooking the confluence of the South Platte River and Cherry Creek, across the creek from the existing mining settlement of Auraria, and on the site of the existing townsite of St. Charles. Larimer named the townsite Denver City to curry favor with Kansas Territorial Governor James W. Denver. Larimer hoped the town's name would help it be selected as the county seat of Arapahoe County, but unbeknownst to him, Governor Denver had already resigned from office. The location was accessible to existing trails and was across the South Platte River from the site of seasonal encampments of the Cheyenne and Arapaho. The site of these first towns is now occupied by Confluence Park near downtown Denver. Edward W. Wynkoop came to Colorado in 1859 and became one of the city's founders. Wynkoop Street in Denver is named after him.

Larimer, along with associates in the St. Charles City Land Company, sold parcels in the town to merchants and miners, with the intention of creating a major city that would cater to new immigrants. Denver City was a frontier town, with an economy based on servicing local miners with gambling, saloons, livestock, and goods trading. In the early years, land parcels were often traded for grubstakes or gambled away by miners in Auraria. In May 1859, Denver City residents donated 53 lots to the Leavenworth & Pike's Peak Express in order to secure the region's first overland wagon route. Offering daily service for "passengers, mail, freight, and gold", the Express reached Denver on a trail that trimmed westward travel time from twelve days to six. The Denver City, Kansas Territory, post office opened on February 11, 1860

On February 18, 1861, six chiefs of the Southern Cheyenne and four of the Arapaho signed the Treaty of Fort Wise with the United States"Treaty with the Arapaho and Cheyenne, 1861" (Treaty of Fort Wise). 12 Stat. 1163, p. 810. at Bent's New Fort at Big Timbers near what is now Lamar, Colorado. They ceded more than 90 percent of the lands designated for them by the Fort Laramie Treaty, including the area of modern Denver. Some Cheyennes opposed to the treaty, saying that it had been signed by a small minority of the chiefs without the consent or approval of the rest of the tribe, that the signatories had not understood what they signed, and that they had been bribed to sign by a large distribution of gifts. The territorial government of Colorado, however, claimed the treaty was a "solemn obligation" and considered that those Indians who refused to abide by it were hostile and planning a war.Life of George Bent: Written From His Letters, by George E. Hyde, edited by Savoie Lottinville, University of Oklahoma Press (1968), hardcover, 390 pages; trade paperback, 280 pages (March 1983)

On February 28, 1861, the Colorado Territory was created, Arapahoe County was formed on November 1, 1861, and Denver City was incorporated on November 7, 1861. Denver City served as the Arapahoe County Seat from 1861 until consolidation in 1902. With its newfound importance, Denver City shortened its name to Denver in 1866. On December 9, 1867, Denver became the territorial capital. On August 1, 1876, Colorado was admitted to the Union. Denver was made the permanent state capital in a 1881 Colorado state capital referendum.

This disagreement on the validity of Treaty of Fort Wise escalated to bring about the Colorado War of 1864 and 1865, during which the brutal Sand Creek massacre against Cheyenne and Arapaho peoples occurred. The aftermath of the war was the dissolution of the reservation in Eastern Colorado, the signing of Medicine Lodge Treaty which stipulated that the Cheyenne and Arapaho peoples would be relocated outside of their traditional territory. This treaty term was achieved, even though the treaty was not legally ratified by the tribal members, as per the treaty's own terms. Thus, by the end of 1860s, this effectively and completely cleared the Denver area of its indigenous inhabitants.Magazine, Smithsonian. "How the 1867 Medicine Lodge Treaty Changed the Plains Indian Tribes Forever." Smithsonian.com. Smithsonian Institution, October 23, 2017. Link.

Although by the close of the 1860s Denver residents could look with pride at their success establishing a vibrant supply and service center, the decision to route the nation's first transcontinental railroad through Cheyenne City, rather than Denver, threatened the prosperity of the young town. The transcontinental railroad passed a daunting away, but citizens mobilized to build a railroad to connect Denver to it. Spearheaded by visionary leaders, including Territorial Governor John Evans, David Moffat, and Walter Cheesman, fundraising began. Within three days, $300,000 had been raised, and citizens were optimistic. Fundraising stalled before enough was raised, forcing these visionary leaders to take control of the debt-ridden railroad. Despite challenges, on June 24, 1870, citizens cheered as the Denver Pacific completed the link to the transcontinental railroad, ushering in a new age of prosperity for Denver.Baker, Gayle, Denver, HarborTown Histories. Santa Barbara, California, p. 31-33, (print), 9780987903860 (on-line)

After Denver was connected to the national rail network, the city developed as a regional service and supply center. During this period, its population and economy expanded. Wealthy residents financed a number of prominent commercial, cultural, and residential buildings. Horace Tabor, a mining entrepreneur from Leadville, constructed a business block at 16th and Larimer and the Tabor Grand Opera House. Hotels such as the Brown Palace Hotel were also built, along with large private residences including the Croke, Patterson, and Campbell mansions at 11th and Pennsylvania and the since-demolished Moffat Mansion at 8th and Grant.Baker, p. 39-48 City leaders also sought to expand Denver's industrial base by attracting businesses and workers.

Soon, in addition to the elite and a large middle class, Denver had a growing population of immigrant German, Italian, and Chinese laborers, soon followed by African Americans from the Deep South and Hispanic workers. The influx of the new residents strained available housing. In addition, the Silver Crash of 1893 unsettled political, social, and economic balances. Competition among the different ethnic groups was often expressed as bigotry, and social tensions gave rise to the Red Scare. Americans were suspicious of immigrants, who were sometimes allied with socialist and labor union causes. After World War I, a revival of the Ku Klux Klan attracted white, native-born Americans who were anxious about the many changes in society. Unlike the earlier organization that was active in the rural South, KKK chapters developed in urban areas of the Midwest and West, including Denver, and into Idaho and Oregon. Corruption and crime also developed in Denver.Baker, p. 51-55

Between the years 1880 and 1895, the city underwent a huge rise in corruption, as crime bosses, such as Soapy Smith, worked side by side with elected officials and the police to control elections, gambling, and bunco gangs. The city also suffered a depression in 1893 after the crash of silver prices. In 1887, the precursor to the international charity United Way was formed in Denver by local religious leaders, who raised funds and coordinated various charities to help Denver's poor.United Way History . The United Way. Retrieved: September 26, 2006. By 1890, Denver had grown to be the second-largest city west of Omaha, Nebraska.US Population History from 1850. Demographia. Retrieved: July 20, 2006 In 1900, whites represented 96.8% of Denver's population. The African American and Hispanic populations increased with migrations of the 20th century. Many African Americans first came as workers on the railroad, which had a terminus in Denver, and began to settle there.

Between the 1880s and 1930s, Denver's floriculture industry developed and thrived.Shu Liu and Linda M. Meyer, "Carnations and the Floriculture Industry: Documenting the Cultivation and Marketing of Flowers in Colorado", 2007 This period became known locally as the Carnation Gold Rush.