This PowerPoint presentation examines the Native American tribes of the Great Plains and their struggles with the U.S. government and westward expansion. It begins by charting some of the similarities amongst Great Plains tribes highlighting the importance of the bison as a source of food, clothing and shelter. It then examines the government's campaign to exterminate that animal. It then focuses on the military conflict between various tribes and the U.S. Army. It begins with an examination of the Sand Creek Massacre and then focuses on conflict with the Lakota. It touches on the Treaty of Ft. Laramie 1868, the Battle of Little Big Horn, and Wounded Knee. It also briefly talks about the Ghost Dance movement as an attempt amongst Natives to deal with the destruction of their way of life. It concludes with an examination of the Dawes Severalty Act and efforts by the U.S. government to assimilate Natives into an "American" way of life. This presentation is used in an Advanced Placement United States History class and is based on parts of Chapter 26 of The American Pageant, 14th ed.