U.S. commissioners and representatives of multiple Plains nations (including the Sioux/Lakota) sign the Fort Laramie Treaty of 1851, aiming to define territories and secure travel/fort-building corridors in exchange for annuities. The treaty’s promises and later breaches became a key backdrop to later Lakota resistance.
A U.S. Army detachment enters a Lakota camp near Fort Laramie during a dispute over a cow; fighting erupts after Chief Conquering Bear is shot. The deaths of Grattan’s party mark a major escalation and are widely treated as the opening clash of the First Sioux War.
Colorado volunteer troops attack a Cheyenne and Arapaho camp at Sand Creek, killing large numbers of people, many of them women and children. The atrocity further destabilizes Plains relations and contributes to a widening cycle of warfare that affected allied and neighboring nations, including the Lakota.
During Red Cloud’s War, Lakota, Cheyenne, and Arapaho forces ambush and kill an 81-man U.S. Army detachment near Fort Phil Kearny. The victory demonstrates coordinated Indigenous resistance to the Bozeman Trail military forts in the Powder River region.
A hay-cutting detail near Fort C. F. Smith repels a large attack during Red Cloud’s War. The battle illustrates the intensity of conflict around the Bozeman Trail forts and the evolving tactical balance as U.S. troops field newer breech-loading rifles.
Lakota warriors attack a small group of soldiers and civilians protected by wagon-box defenses. The engagement becomes notable for the role of rapid-firing breech-loaders in enabling a small defensive force to withstand a much larger assault during Red Cloud’s War.
The United States signs the 1868 Fort Laramie Treaty with Sioux bands and the Arapaho, recognizing (among other terms) the Great Sioux Reservation and including the Black Hills within it. The treaty becomes central to later disputes as U.S. policy and settlement pressures undermine its guarantees.
After Red Cloud refuses to make peace until the Bozeman Trail forts are removed, U.S. forces abandon Fort Phil Kearny, Fort C. F. Smith, and Fort Reno. The withdrawal marks a rare instance of the U.S. Army conceding key objectives under sustained Indigenous military pressure.
Lakota and Northern Cheyenne forces (with Crazy Horse prominent among the leaders) fight U.S. troops under George Crook and allied Crow/Shoshoni. Crook’s inability to continue forward immediately helps shape the operational context for the Little Bighorn campaign days later.
Combined Lakota, Northern Cheyenne, and Arapaho forces defeat Lt. Col. George A. Custer’s 7th Cavalry near the Little Bighorn River. The battle becomes the most famous engagement of the 1876–77 Great Sioux War and triggers intensified U.S. military and political pressure on Lakota communities.
Congress passes the 1877 act often referred to as the Manypenny Agreement, compelling cession of the Black Hills and reducing Lakota landholdings. This codifies U.S. control over territory protected under the 1868 treaty, deepening long-term legal and political conflict over the Black Hills.
After surrender-era tensions and an attempted confinement in the post guardhouse, the Oglala war leader Crazy Horse is fatally wounded by a bayonet at Fort Robinson. His death removes a key military leader of Lakota resistance in the war’s aftermath.
After years in Canada following the Great Sioux War, Sitting Bull returns to U.S. territory and surrenders at Fort Buford. The event symbolizes the narrowing options for non-reservation independence amid hunger, military pressure, and collapsing buffalo economies.
Paiute prophet Wovoka reports a vision during the January 1, 1889 solar eclipse, inspiring the Ghost Dance movement. Its spread among Lakota communities is later interpreted by U.S. authorities as a security threat, contributing to heightened tensions in 1890.
At Standing Rock, Indian police attempt to arrest Sitting Bull amid government fears about the Ghost Dance; a confrontation breaks into gunfire and Sitting Bull is killed. His death accelerates instability as some Lakota groups flee or regroup under mounting military pressure.
U.S. 7th Cavalry troops kill large numbers of Lakota at Wounded Knee Creek during an attempt to disarm a camp led by Spotted Elk (Big Foot). The massacre is widely treated as the climactic violence of the Ghost Dance crisis and the last major armed conflict of the Sioux Wars era.
Lakota Resistance and the Great Sioux Wars (1854–1891)
