The Crow Tribe is marking the 200th anniversary of their treaty with the United States. It is a document whose limits have been tested over that time, but still defines the tribe’s relationship with the federal government. This year also marks 170 years since the treaty ratifying the Confederated Tribes of the Umatilla Indians’ official relationship with the U.S. We’ll examine these important historical and legal milestones and how they fit in with the extensive and complicated history of treaties.