Answer:
The release of two atomic bombs on Japan in August 1945 helped end World War II but ushered in the Cold War, a conflict between the United States and the Soviet Union that dragged on nearly half a century. ... Cold War calculations led to a divided Germany and U.S. involvement in wars in Korea and Vietnam
Explanation:
Well they are the ones who made the social hierarchy. (Division of labor.)
Not necessarily their land is not occupied right now but they still terrorize people. But it could have influenced the creation of such groups due to a foreign people with different beliefs and tradition came into their lands.