During the Korean War it was a battle between South Korean and North Korea. The North wanted to take over all of Korea and change it into a communist country. Of course America would not let this go and intervened preventing North Korea to advance any further by launching a counterattack at Inchon. This pushed the North Koreans back to the border between the North and South of Korea.
I think that if America never intervene during the Korean War the world today would be very different. Communism would have spread through all of Korea turning it into a communist country. I think that it would have caused a Domino Effect causing other counties turning communist. The way this would impact my life is that I would be in great fear. I would be afraid that communism would spread world wide and eventually hit America.