The correct answer is the classical conditioning. Classical
conditioning is defined as a king of learning procedure by which a kind of
biological potent stimulus is being associated or paired with a stimulus that
is considered to be previously neutral.
During the Vietnam war, the country is separated hawks and doves. It is because we couldn't defend against Vietnam.
The transition economy might have problems with rising unemployment, inflation, lack of entrepreneurship and skills, corruption, lack of legal system, moral hazard and inequality. With these problems that the transition economy will have, it might turn foreign investors and will not invest.