The tribes that were affected by this treaty were the Walla Walla and the Cayuse. I would say that the answer is the Walla Walla tribe. Hope it helps :)
He was banned because he was found guilty in court. He was found guilty of spreading "dangerous" ideas. He was against cruel punishment.
The concept of democracy that is best illustrated by the following saying would be that "<span>Democracies respect personal liberties and freedoms," since this is saying that it is not the right of one man to impede the rights of another. </span>