Sitting Bull did not agree to the treaty. He told the Jesuit missionary, Pierre Jean De Smet, who sought him out on behalf of the government: "I wish all to know that I do not propose to sell any part of my country." He continued his hit-and-run attacks on forts in the upper Missouri area throughout the late 1860s and early 1870s. The events of 1866–1868 mark a historically debated period of Sitting Bull's life. According to historian Stanley Vestal, who conducted interviews with surviving Hunkpapa in 1930, Sitting Bull was made "Supreme Chief of the whole Sioux Nation" at this time.
Sitting Bull the region. During this meeting, James Morrow Walsh, commander of the North-West Mounted Police, explained to Sitting Bull that the Lakota were now on British soil and must obey British law. Walsh emphasized that he enforced the law equally and that every person in the territory had a right to justice. Walsh became an advocate for Sitting Bull and the two became good friends for the remainder of their lives. While in Canada, Sitting Bull also met with Crowfoot, who was a leader of the Blackfeet, long-time powerful enemies of the Lakota and Cheyenne. Sitting Bull wished to make peace