The Untied States and the United Nations were against North Korea's communist and the aid of communist of China
The Korean war was a cause of The United states trying to influence North Korea being democratic and south Korea being communists. It was an emplification of democratic VS communists.
The war occured on the Korean Penisula which was on the 38th parrellel. This was between north Korea and South Korea.
The war started at the end of the Chinese civil war ending in 1949. China had emerged as communist. The U.N. and U.S. had began fighting korea in 1950. The war ended around three years later by and armistice but no formal and to the war was ever made.
We must contain communism!!
The significance of the war was the U.S. and the Soviets trying to spread there ideologies and trying to be a global power