To what extent was American involvement in the Korean War based on self interest?

U.S. involvement in the Korean War. On June 24, 1950, the North Koreans invaded South Korea. A few days later, Truman ordered U.S. troops to the aid of South Korea and convinced the United Nations (UN) to send military aid as well , in what was referred to in diplomatic circles as a police action

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d) the constitution rights of native americans and their right to self-government on reservations