How did Korea get divided into North Korea and South Korea and what role did the United States play in this?

According to an understanding reached between the United States and the Soviet Union in the last days of the war, Soviet troops would occupy the parts of Korea north of the 38th parallel and US troops would occupy those south of this dividing line.

Explanation: North and South Korea have been divided for more than 70 years, ever since the Korean Peninsula became an unexpected casualty of the escalating Cold War between two rival superpowers: the Soviet Union and the United States.

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