This resource includes a source based lesson on Native American tribes on the Great Plains and how they were impacted by westward expansion. The Google Form includes 7 sets of sources and a total of 15 questions. The sources include maps, pictures, timelines, graphs, and a video. The questions are multiple-choice and open response. Topics Covered: -Native American vs. American use of the Buffalo and the impact of westward expansion on this resource -Conflict on the Great Plains: battles between