Deja vu I believe because deja vu is the experience of the same thing over again
When you have a row of dominoes set up, you knock over the first one, and what happens to the last one is the certainty that the last one will go over very quickly.
That was the U.S. fear about Communism. If one country became communist, the neighboring country would fall to communism just as the dominoes would fall.
A Trade barrier are laws that limits free trades between countries or nations, An Embargo are type of laws that specifically cuts off trades, it may be import or export into specific countries. Either of these answers fit your question.
The three theories of human nature where we have the first, pessimistic -where the workers work s little as possible and steal ideas given an opportunity Optimistic- Workers are generally satifactory and do not require monitoring.
