Its been a while since I did this topic, but I believe it was mostly because under communism there was little work for intellectuals, so they were often the ones who left the country. This resulted in a 'brain drain', a lack of knowledgable people. I seem to remember reading about the entire maths department of a university just up and leaving at one point. You could also argue that it was damaging for the image of communism if so many people were trying to leave.
Should pay attention in class
C. They were cities in Japan where the US dropped atomic bombs
Hiroshima
City in Japan, the first to be destroyed by an atomic bomb, on August 6, 1945. The bombing hastened the end of World War II.
Nagasaki
Japanese city devastated during World War II when the United States dropped the second atomic bomb on Aug 8th, 1945.
