Comparing the untouched united states during the time before it was settled by Europeans to modern america
The purpose was to teach native americans white culture and make them a second class citizen not only that they stripped them of their warrior names culture and beliefs
Because of the proposal president Truman endorsed on equal rights amendment to the United States.
The occupation that it referring to is : skilled and unskilled miners
This treaty was enacted in 1880 , back then the job as a miners is pretty much the equivalent of today's engineer in the term of hotness and availability.
Hope this helps
The answer is one benefit of Confucianism