The Pine Ridge Indian Reservation (), also called Pine Ridge Agency, is an Oglala Lakota Indian reservation located in the U.S. state of South Dakota, with a small portion extending into Nebraska. Originally included within the territory of the Great Sioux Reservation, Pine Ridge was created by the Act of March 2, 1889, 25 Stat. 888. in the southwest corner of South Dakota on the Nebraska border. It consists of of area and is one of the largest reservations in the United States.

The reservation encompasses the entirety of Oglala Lakota County and Bennett County, the southern half of Jackson County, and a small section of Sheridan County added by Executive Order No. 2980 of February 20, 1904. Of the 3,142 counties in the United States, these are among the poorest. Only of land are suitable for agriculture. The 2000 census population of the reservation was 15,521. A 2009 study by Colorado State University and accepted by the United States Department of Housing and Urban Development has estimated the resident population to reach 28,787."Indian Housing Block Grant Formula" , U.S. Housing and Urban Development

Pine Ridge is the site of several events that mark milestones in the history between the Sioux of the area and the U.S. government. Stronghold Table, a mesa in what is today the Oglala-administered portion of Badlands National Park, was the location of the last of the Ghost Dances. U.S. authorities repressed this movement, eventually leading to the Wounded Knee Massacre on December 29, 1890. A mixed band of Miniconjou Lakota and Hunkpapa Sioux, led by Chief Spotted Elk, sought sanctuary at Pine Ridge after fleeing the Standing Rock Agency, where Sitting Bull had been killed during efforts to arrest him. The families were intercepted and attacked by a heavily armed detachment of the Seventh Cavalry, which killed many women and children as well as warriors. This was the last large engagement between U.S. forces and Native Americans and marked the end of the western frontier.

Changes accumulated in the last quarter of the 20th century: in 1971 the Oglala Sioux Tribe (OST) started Oglala Lakota College, a tribal college, which offers 4-year degrees. In 1973 decades of discontent at the Pine Ridge Reservation resulted in a grassroots protest that escalated into the Wounded Knee Incident, gaining national attention. Members of the Oglala Lakota, the American Indian Movement and supporters occupied the town in defiance of federal and state law enforcement in a protest that turned into an armed standoff lasting 71 days. This event inspired American Indians across the country and gradually led to changes at the reservation. It has revived some cultural traditions and encouraged language training. In 1981 Tim Giago (Lakota) started the Lakota Times at Pine Ridge.

Located at the southern end of the Badlands, the reservation is part of the mixed grass prairie, an ecological transition zone between the short-grass and tall-grass prairies; all are part of the Great Plains. A great variety of plant and animal life flourishes on and adjacent to the reservation, including the endangered black-footed ferret. The area is also important in the field of paleontology; it contains deposits of Pierre Shale formed on the seafloor of the Western Interior Seaway, evidence of the marine Cretaceous–Paleogene boundary, and one of the largest deposits of fossils of extinct mammals from the Oligocene epoch.

History

19th century

Great Sioux Reservation

As stipulated in the Treaty of Fort Laramie (1868), the U.S. government built Native American agencies for the various Lakota and other Plains tribes. These were forerunners to the modern Indian reservations. The Red Cloud Agency was established for the Oglala Lakota in 1871 on the North Platte River in Wyoming Territory. The location was one mile (1.6 km) west of the present town of Henry, Nebraska. The location of the Red Cloud Agency was moved to two other locations before being settled at the present Pine Ridge location. Pine Ridge Reservation was originally part of the Great Sioux Reservation established by the 1868 Treaty of Fort Laramie. It encompassed approximately 60 million contiguous acres () of western South Dakota (all of what is now called West River), northern Nebraska and eastern Wyoming.

Exclusion of the Black Hills In 1874, George Armstrong Custer led the U.S. Army Black Hills Expedition, which set out on July 2 from Fort Abraham Lincoln in the Dakota Territory, with orders to travel to the previously uncharted Black Hills of South Dakota. Its mission was to look for suitable locations for a fort, find a route to the southwest, and to investigate the potential for gold mining. After the discovery of gold was made public, miners began invading Sioux Territory.

"Custer's florid descriptions of the mineral and timber resources of the Black Hills, and the land's suitability for grazing and cultivation ... received wide circulation, and had the effect of creating an intense popular demand for more settlers to invade the Black Hills.". Initially the U.S. military tried to turn away trespassing miners and settlers. Eventually President Grant, the Secretary of the Interior, and the Secretary of War, "decided that the military should make no further resistance to the occupation of the Black Hills by miners."U.S. v. Sioux Nation, 448 U.S. at 378. These orders were to be enforced "quietly", and the President's decision was to remain "confidential".

As more settlers and gold miners encroached upon the Black Hills, the Government determined it had to acquire the land from the Sioux, and appointed a commission to negotiate the purchase.U.S. v. Sioux Nation, 448 U.S. at 379. The negotiations failed, as the Sioux resisted giving up what they considered sacred land. The U.S. resorted to military force. They declared the Sioux Indians "hostile" for failing to obey an order to return from an off-reservation hunting expedition by a specific date. In the dead of winter, the Sioux found the overland travel was impossible.U.S. v. Sioux Nation, 448 U.S. at 379-380.

The consequent military expedition to remove the Sioux from the Black Hills included an attack on a major encampment of several bands on the Little Bighorn River. Led by General Custer, the attack ended in his defeat. It was an overwhelming victory of chiefs Sitting Bull and Crazy Horse over the 7th Cavalry Regiment, a conflict often called Custer's Last Stand.See generally US forces were vastly outnumbered.

In 1876 the U.S. Congress decided to open up the Black Hills to development and break up the Great Sioux Reservation. In 1877, it passed an act to make 7.7 million acres (31,000 km2) of the Black Hills available for sale to homesteaders and private interests. In 1889 Congress divided the remaining area of Great Sioux Reservation into five separate reservations, defining the boundaries of each in its Act of March 2, 1889, 25 Stat. 888. Pine Ridge was established at that time.

Wounded Knee Massacre

The Wounded Knee Massacre occurred on December 29, 1890, near Wounded Knee Creek (Lakota: Cankpe Opi Wakpala). On the day before, a detachment of the U.S. 7th Cavalry Regiment commanded by Major Samuel M. Whitside intercepted Spotted Elk's (Big Foot) band of Miniconjou Lakota and 38 Hunkpapa Lakota near Porcupine Butte and escorted them westward to Wounded Knee Creek where they made camp. The rest of the 7th Cavalry Regiment, led by Colonel James Forsyth, surrounded the encampment, supported by four Hotchkiss guns.

On the morning of December 29, 1890, the troops went into the camp to disarm the Lakota. One version of events claims that during the process, a deaf tribesman named Black Coyote was reluctant to give up his rifle, saying he had paid a lot for it."Wounded Knee — Lakota" , Native American Atrocities A scuffle over Black Coyote's rifle escalated and a shot was fired, which resulted in the 7th Cavalry opening firing indiscriminately from all sides, killing men, women, and children, as well as some of their fellow troopers. Those few Lakota warriors who still had weapons began shooting back at the troopers, who quickly suppressed the Lakota fire. The surviving Lakota fled, but U.S. cavalrymen pursued and killed many who were unarmed.

In the end, U.S. forces killed at least 150 men, women, and children of the Lakota Sioux and wounded 51 (four men, and 47 women and children, some of whom died later); some estimates placed the number of dead at 300. Twenty-five troopers also died, and thirty-nine were wounded (six of the wounded would also die).Jack Utter, Wounded Knee & the Ghost Dance Tragedy, p. 25, National Woodlands Publishing Company; 1st edition (April 1991) Many Army deaths were believed to have been caused by friendly fire, as the shooting took place at close range in chaotic conditions.

The site has been designated a National Historic Landmark and is administered by the National Park Service.

20th century

White Clay Extension

In 1882, at the urging of Valentine McGillycuddy—the US Indian Agent at the Pine President Agency—President Chester A. Arthur issued an executive order establishing the White Clay Extension, an area of land in Nebraska extending south of the reservation's border and wide approximately perpendicular to the road leading north into the town of Pine Ridge on the reservation.INDIAN AFFAIRS: LAWS AND TREATIES Vol. I, Laws (Compiled to December 1, 1902) http://digital.library.okstate.edu/kappler/Vol1/HTML_files/NEB0861.html This road is today's Nebraska Highway 87. McGillycuddy lobbied for the buffer zone to prevent white peddlers from engaging in the illegal sale of "knives, guns, and alcohol" to the Oglala Lakota residents of Pine Ridge.

A law passed in Congress in 1832 banned the sale of alcohol to Native Americans. The ban was ended in 1953 by Public Law 277, signed by President Dwight D. Eisenhower. The amended law gave Native American tribes the option of permitting or banning alcohol sales and consumption on their lands. The OST and many other tribes chose to exclude alcohol from their reservations because of the problems for their people.

In 1887, when Congress enacted the Dawes Severalty Act of 1887—breaking up the reservations and allotting a plot to the registered head of each family—the Whiteclay Extension was specifically exempted. On March 2, 1889, the U.S. Congress enacted the Great Sioux Agreement of March 2, 1889, 25 Stat. 888, breaking up the Great Sioux Reservation and setting boundaries for the six reduced reservations. In this act, the White Clay Extension was incorporated again within the boundaries of the Pine Ridge Agency. "Provided, That the said tract of land in the State of Nebraska shall be reserved, by Executive order, only so long as it may be needed for the use and protection of the Indians receiving rations and annuities at the Pine Ridge Agency."INDIAN AFFAIRS: LAWS AND TREATIES Vol. I, Laws; Chapter 405, March 2, 1889. | 25 Stat., 888.

On January 25, 1904, President Theodore Roosevelt signed an executive order returning the of the White Clay Extension to the public domain. The town of Whiteclay in Sheridan County, Nebraska, just over the border from the reservation, was founded in the former "Extension" zone. Merchants quickly started selling alcohol to the Oglala Sioux.

On February 20, 1904, Roosevelt amended the executive order to return back to Pine Ridge: "the section of land embracing the Pine Ridge Boarding School irrigation ditch and the school pasture".

Bennett County Land dispute