I believe the answer is: hardy individual
Hardy individuals refers to the individual that are able to maintain mental stability despite facing certain level of pressure/stress in their life. In general, they tend to have a more positive outlook in their life and able to develop healthy relationships with other people around them.
Answer:
structure and its language, the Constitution expressed six basic principles of governing. These principles are popular sovereignty, limited government, separation of powers, checks and balances, judicial review, and federalism.
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.