Sitting Bull Hills for gold and to determine a suitable location for a military fort in the Hills. Custer's announcement of gold in the Black Hills triggered the Black Hills Gold Rush. Tensions increased between the Lakota and whites seeking to move into the Black Hills. Although Sitting Bull did not attack Custer's expedition in 1874, the US government was increasingly pressured by citizens to open the Black Hills to mining and settlement. Failing in an attempt to negotiate a purchase or lease of the Hills, the government in Washington had to find a way around the promise to protect the Sioux
Sitting Bull parties against Fort Berthold, Fort Stevenson, and Fort Buford and their environs from 1865 through 1868. Sitting Bull also made guerrilla attacks on emigrant parties and smaller forts throughout the upper Missouri River region. By early 1868, the U.S. government desired a peaceful settlement to Red Cloud's War. It agreed to Red Cloud's demands that the US abandon forts Phil Kearny and C.F. Smith. Gall of the Hunkpapa (among other representatives of the Hunkpapa, Blackfeet, and Yankton Dakota) signed a form of the Treaty of Fort Laramie on July 2, 1868 at Fort Rice (near Bismarck, North Dakota). Sitting Bull