“Laws and Treaties” With Native Americans, the US Broke

How many treaties did the US break that it set up with Native Americans?

Based on the “Laws and Treaties” article define, how many treaties did the US break, that is, not honor, that it set up with Native Americans? What normally happens when someone breaks a contract? Select a few treaties from the Deloria, Jr. article that the US violated. What was the purpose of some of these treaties?