A. The United States' Stance vs. the Soviet Union's Stance:
Through out the Cold War, the United States' stance was firmly in capitalism, while the Soviet Union's stance was in communism. The United States also believed in democracy and having the people choose what happens in their government, so when the Soviet Union was trying to force their communist beliefs on other countries, the United States opposed it. The United States would send money, and later on military support, to help countries from becoming communist.
B. The Korean War (1950-1953):
During the Cold War, Korea was split by ideologies and a border called the 38th Parallel. North Korea was communist, while South Korea was not. The United States and the Soviet Union played a hand in the events that took place during the war. The Soviets left weaponry in North Korea, which the North Koreans then used to invade South Korea and take the capital. The North Koreans pushed the South Koreans into a corner, and the United States knew it had to help. This was the only time when the United States actually fought during the Cold War. President Truman sent in General Douglas MacArthur and his troops to help South Korea. The South Koreans, now backed up by the United States, pushed the North Korea back past the border, which is still there today.