In June 1877, several bands of the Nez Perce, numbering about 750 men, women, and children, resisted relocation from their native lands on the Wallowa River in northeast Oregon to a reservation in west-central Idaho on the Clearwater River. Facing forced removal, the Nez Perce attempted to escape to the east through Idaho, Montana, and Wyoming over the Rocky Mountains into the Great Plains. By late August, after traveling hundreds of miles and engaging in several battles where they defeated or held off pursuing U.S. Army forces, the Nez Perce entered Yellowstone National Park.
Between August 20 and September 7, 1877, the Nez Perce fled through Yellowstone National Park while the U.S. Army pursued them across the terrain. During this passage through the park, hostile and sometimes deadly encounters occurred between park visitors and the Nez Perce. The article indicates these were significant enough to be recorded as part of the conflict, though specific details of individual engagements are not provided in the available text.
The Army's sustained pursuit forced the Nez Perce off the Yellowstone plateau and into forces that had been arrayed to capture or destroy them as they emerged from the mountains of Yellowstone onto the valley of Clark's Fork of the Yellowstone River. This maneuver effectively cornered the Nez Perce between pursuing forces and blocking positions, significantly limiting their strategic options and mobility as the conflict continued.
The Indian Wars encompass more than three centuries of armed conflict between the United States government, American settlers, and Indigenous nations — from the Powhatan Wars of the 1620s through the final Plains campaigns of the late 19th century. The eastern conflicts — King Philip's War (1675–1676), the Tuscarora War (1711–1715), and the Creek and Seminole Wars — largely ended organized Indigenous resistance east of the Mississippi by the 1840s. On the Great Plains, the Sioux Wars (1854–1890), Red River War (1874–1875), and Nez Perce War (1877) followed the displacement wrought by the transcontinental railroad and the near-extinction of the American bison — an estimated 30 to 60 million animals reduced to fewer than 1,000 by 1890. The Ghost Dance religious movement and the massacre at Wounded Knee (December 29, 1890), in which US cavalry killed approximately 250 Lakota men, women, and children, marked the effective end of armed resistance. The Dawes Act (1887) allotted reservation land to individual families, opening millions of acres to white settlement and reducing Indigenous landholdings by about two-thirds over the following decades.
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