What was the u.s. government policy of "civilization" and how was it introduced to the cherokees?

The US government policy of civilization is that they wanted to teach how to live as a white people to be able to get along with the traditions and cultures of white for them to be civilized and educated. This policy was being introduced to Cherokees by the Missionaries.

The Truman Doctrine was an American foreign policy whose stated purpose was to contain Soviet geopolitical expansion during the Cold War. ... Truman told Congress that "it must be the policy of the United States to support free peoples who are resisting attempted subjugation by armed minorities or by outside pressures."

Explanation: (happy to help)