The Battle of the Little Bighorn was significant because the US Army was defeated by the Sioux nation. This defeat changed government policy.
In 1874 many prospectors began searching for gold in the BlackHills, part of the Siouxhuntinggrounds in Dakota. This was a breach of the 1868 Fort Laramie Treaty.
The government offered to buy the BlackHills, but the Sioux refused. The government then said that the Sioux had broken the treaty because they were attackingprospectors.
Thousands of Sioux and Cheyennewarriorsleft their reservations to join leaders SittingBull and CrazyHorse. The government gave them 60days to return, or else they could be attacked. By spring 18767,000Sioux had set up camp, ready for a war with the whites.
US Army commander George Custerfound a camp of 2,000 warriors in the valley of the LittleBighorn. Although he should have waited for backup, he went ahead and attacked with only 200 cavalrymen.
Led by CrazyHorse, the SiouxkilledCuster and allofhismen.
Publicopinion now turned against Plains Indians: it was felt that they should assimilate (become like white Americans) or die…