Final answer:
After World War II, the United States occupied the southern part of Korea.
Step-by-step explanation:
After World War II, Korea was divided along the 38th parallel. The southern part of Korea was occupied by the United States, while the northern part was occupied by the Soviet Union. The United States backed a non-communist regime in the south led by Kim Il-Sung, while the Soviets established a pro-Soviet, communist government in the north. This division eventually led to the Korean War in 1950.