Answer:
The Korean War was caused because North Korea, China, and the Soviet Union all wanted the Korean Peninsula to be a communist area. Then North Korean troops marched into South Korea which set off the war.
Step-by-step explanation:
It was battled between North Korea and South Korea in the early part of the 1950s. Today, historians usually agree on several main causes of the Korean War, including the rise of communism during the Cold War, American containment, and Japanese occupation of Korea during World War II.