This all came to an end in the 16th century. Although Indians have title to some land, they are not allowed to administer that land. On this land they do not pay tax. This is a canard that seems impossible to correct. Tell your friends that it is not true.
Some people feel that sharing and being helpful to one's relatives is a kind of divine command.
Others feel that competition for goods and inheritance, and accumulation of goods, is a divine command. Perhaps both groups have the right to think as they choose, but the difference in thinking does make it difficult for the Indian to move into non-Indian society. So the slaughter of buffalo went on. Between 1980 to 1990, the Indian population grew by 35 percent. But Gold was discovered.