Why did President Truman relieve General MacArthur of his command?

President Truman relieved General MacArthur because MacArthur publicly challenged Truman’s policy of limiting the Korean War. He advocated widening the war by attacking China and proposed using nuclear weapons against it. This is why “MacArthur wanted to use nuclear weapons on China” is the correct choice; the dispute was not about retreating to the 38th parallel or attacking Russia.

AI-written and checked against the verified answer.