The Korean War
The Korean War was fought between the North and the South. North Korea invaded the south in 1950 because the Soviet Union didn't think that the U.S. would intervene.
When North Korea invaded the south it started a war that would last until 1952. However, the after effects of the war would last for many more decades. The Korean War was the exact event that the U.S. did not want. They feared it would be just like Germany and Berlin all over again.
The 38th parallel divided Korea into two different countries- the north and south.
Douglas MacArthur Tries To Use the A-bomb against China
Douglas MacArthur tried to use the a-bomb against China. However, he went over the president's head to congress which got him removed by Truman.