The Five Tribes no longer controlled their destiny after the Treaties of 1866 because _____________________.
A: the U.S. government limited the sovereignty of the tribes
B: the U.S. government disbanded all tribal governments
C: the U.S. government allowed resources in Indian Territory to be open to exploitation by outsiders who were not tribal members
D: the U.S. government limited the sovereignty of the tribes and allowed resources in Indian Territory to be open to exploitation by outsiders who were not tribal members
