Respuesta :

China entered the war in defense of North Korea. Please mark as brainliest if helped I am a challenge that is ending soon! :)

Answer:

North Korea invasion of the South.

Explanation:

In 1950 North Korea invaded South Korea which began the war.

After the war, Korea had been divided by the US and the Soviet Union into two parts, the communist(North) and capitalist(South). Both sides did not recognize the other and considered themselves as the only Korea, which led to the war.