Why was the Korean peninsula divided into two parts?

When the Japanese empire was dismantled at the end of World War Two, Korea fell victim to the Cold War. It was divided into two spheres of influence along the 38th parallel. The Americans controlled south of the line - the Russians installed a communist regime in the north, later ceding influence to China.

Answer: It was divided because the Soviet Union occupied north korea while the U. S. occupied south korea.

Explanation: Having this caused the division to happen and the 38th parallel is what's separating them.