Answer:
Due to unfair behavior of US government with the tribes.
Explanation:
Tribes and the US government could not reach lasting compromises throughout the 1800s because the US government wanted to added the natives tribes into European-American society in order to change their cultural identities and taking of lands from the natives and sold it to the non natives was the main cause due to which Tribes and the US government could not reach lasting compromises. This act of changing the cultural identities and taking the lands of the native tribes was unfair with the native peoples but good for US government.
