Question: who was the most important person in the korean war?
Answer: Dean Acheson. Truman's secretary of state. ... 
Mark W. Clark. ... 
John Foster Dulles. Eisenhower's secretary of state. ... 
James Van Fleet. Army commander who, during World War II, led the D-Day invasion of Utah Beach. ... 
Kim Il-sung. The Communist leader of North Korea. ... 
Douglas C. MacArthur. ... 
John Muccio. ... 
Syngman Rhee.