Although Acheson's "Defensive Perimeter" speech in Jan 12, 1950 did not include Korea, when the war broke out the US was involved immediately. The aim of this investigation is to find out to what extent did economic reasons influence the USA's decision to go to war in Korea. The main sources will be books that relate to the Korean War. Internet sources will be used if it is necessary for the summary of evidence. In B, the …showed first 75 words of 2120 total…

…showed last 75 words of 2120 total…reason makes more sense than the reason why USA intervened Korea as shown in the controversial and mysterious events such as the Acheson speech in Jan. 1950, leaking incorrect information, selling weapons to China secretly, and the prohibition in bombing China, matches with the economic reason rather than any real political reason. In conclusion, it was the USA which encouraged North Korea to invade the South while disguising this as a fight for justice and righteousness.