After World War II, Korea separated on the 38th parallel, in turn creating North and South Korea. Korea was divided because North Korea became communist while South wanted and became democratic. North Korea was mainly an industrial country while South Korea was agriculturally based. On July 25th, 1950 was the battle of YongDong, which was a battle between USA and North Korea. The US lost the battle but it gave time for the United Nations to send more forces which helped a lot. The United Nations is on the side of South Korea and helps them, but most of the troops sent over are American. By September 1950, North Korea pushed the South Koreans back to the Pusan Permitter. The US pushed the North Koreans out of the Pusan Permitter and they went past the 38th parallel near the Yalu river. When the US pushed them out of the 38th parallel China immediately felt threatened, so they sent 300,000 troops into North Korea to help them. Three major battles during the Korean Conflict were: Operation Killer, Operation Ripper, and the battle at Pusan. Operation Killer was basically a battle between the United Nations and North Korea and it was only the second counter offensive battle the United Nations led against North Korea. Now, Operation Ripper was another United Nations military operation with the goal to destroy as much of the People's Voluntary Army and or the North Korean Army. Finally, the Battle of Pusan was one of the first major engagements for Korean Conflict. It was the final stand for the United Nations against the North Koreans, this meant for the UN, killed or be killed. In July, 1953 the armistice is signed, which was an agreement meaning both United States and North Korea would cease fire. By doing this, the conflict ended and the 38th parallel was soon reestablished. Today, North Korea is still communist while South Korea is still democratic.