The Provo River Massacre was a violent attack and massacre in 1850 in which 90 Mormon militiamen surrounded an encampment of Timpanogos families on the Provo River, and laid siege for two days. They eventually shot between 40 and 100 Native American men and one woman with guns and a cannon during the siege and subsequent pursuit, capture, and execution of the two groups that fled during the last night. One militiaman died and eighteen were wounded from return fire during the siege.
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.
Mormon militia: 1 killed, 18 wounded; Timpanogos: between 40 and 100 men and 1 woman killed, with over 40 women, children, and some men captured
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