During the twentieth century the United States tried to stop the spread of communism throughout the world. America even created policies that said they would help countries that were being forced into communistic states by communistic countries. The policy the US created called “containment” stated that America would have to step in when it came to cases such as Korean and Vietnam wars. Powerful communistic countries were trying to overpower smaller weaker countries and that forced the United States to step due to the Containment policy. America did not prefer to trade with communistic countries, so most people thought that the United States only created to Containment policies to benefit themselves and open up more opportunities with other countries.