The domino theory was a theory prominent from the 1950s to the 1980s that posited that if one country in a region came under the influence of communism, then the surrounding countries would follow in a domino effect.
A domino effect or chain reaction is the cumulative effect produced when one event sets off a chain of similar events. The term is best known as a mechanical effect and is used as an analogy to a falling row of dominoes.
So the answer is the last one, “<u>It was the idea that if one nation fell to communism, others would soon follow the example</u>.”
Answer:
Civil liberties and rights of those accused of crimes
Answer:
B
Explanation:
I think it's B because that's the situation where you have the concept of opportunity cost more explicitely mentioned. Even though the concept is also well mentioned in D, for an economist the most important event would be B
Answer:
A reduce import and export barriers
I think the answer is "Trail of Tears". I looked it up but sorry if I got it wrong.