South Korea
On June 25, 1950, North Korean forces surprised the South Korean army (and the small U.S. force stationed in the country), and quickly headed toward the capital city of Seoul. The United States responded by pushing a resolution through the U.N.'s Security Council calling for military assistance to South Korea. (Russia was not present to veto the action as it was boycotting the Security Council at the time.) With this resolution in hand, President Harry S. Truman rapidly dispatched U.S. land, air, and sea forces to Korea to engage in what he termed a "police action." The American intervention turned the tide, and U.S. and South Korean forces marched into North Korea. This action, however, prompted the massive intervention of communist Chinese forces in late 1950. The war in Korea subsequently bogged down into a bloody stalemate. In 1953, the United States and North Korea signed a cease-fire that ended the conflict. The cease-fire agreement also resulted in the continued division of North and South Korea at just about the same geographical point as before the conflict.
Without south Korea north Korea would have never attacked them and the Korean war would never have occurred.
Without south Korea north Korea would have never attacked them and the Korean war would never have occurred.