The Americans set up an American military government in Seoul in the South, and while the Soviets set up a government in Pyongyang in the north. The U.S. recognized the government in Seoul in 1948, the same year North Korea was recognized by the Soviets.
In 1948, the U.S. established an American military administration in Seoul, South Korea, while the Soviet Union set up a government in Pyongyang, North Korea. That same year, both countries acknowledged their respective governments.