B) Berlin Wall because it was a real physical structure that was a symbol of the Iron Curtain.
<span>In March I960, Eisenhower approved a CIA plan to overthrow Castro.Well I believe this is the answer to your question. </span>
It is protected by the fact that it has a system of separation of powers with three branches that control each other and prevent tyrannical behavior from a single branch. They are also separated into local provinces and autonomous regions that are ruled by small scale governments that have some degree of independence and that could easily oppose a new form of tyrannical government.
Answer:
The forty-eight states of the U.S. in the center of North America are called the contiguous United States or officially the conterminous United States.