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 encroachment and the depletion of buffalo herds reduced their resources and challenged Native American independence. In 1875, the Northern Cheyenne, Hunkpapa, Oglala, Sans Arc, and Minneconjou camped together for a Sun Dance, with both the Cheyenne medicine man White Bull or Ice and Sitting Bull in association. This ceremonial alliance preceded their fighting together in 1876. Sitting Bull had a major revelation. At the climactic moment, "Sitting Bull intoned, 'The Great Spirit has given our enemies to us. We are to destroy them. We do not know who they are. They may be soldiers.' Ice too observed, 'No one then