The answer is (D). the Soviet Union and the United States.
Explanation:
At the end of the World War II, the Japanese Empire broke up, thus causing a vacuum in authority in Korea. The US and Soviet Union quickly moved in at that period to establish their authorities over the country but ended up dividing it. The Soviet Union troops came in and were stationed in the North while the United States troops came in and were stationed in the South thus creating a delineation of two countries of North and South Korea.
