What was the world history event occurring in the stated time frame that caused the Soviet Union to enter Korea?

(A) The Crimean War (B) World War I (C) World War II (D) The Seven Years’ WarExplanation: The introduction states that the events occurred in the 1940s, which was during the World War II era. The Crimean War occurred between 1853 and 1856, and therefore is the wrong era (B). World War I occurred between 1914 and 1918, which is also the wrong era (B). The Seven Years’ War occurred in Europe, primarily between 1755 and 1763. It is therefore from the wrong era, and also occurred in a different location.