The treaty of 1868 promised the land located in the Black Hills, which are in the Dakotas, to the Souix. But then it was dicovered that the hills had gold in them. In 1874, General Custer comfirmed that, and soon many people were trespassing. The Souix were mad and tried to protest against the trespassers. But the government who had once said that people were not able to even pass through the land was now trying to buy the land from them. The Souix refused to sell the land to them.