D
A social contract is where everyone of a society agree to cooperate for social benefits.
Hope this helps!
These journalists were called muckrakers. They basically "raked the muck" out of society to make it a better place. They uncovered unsafe working conditions and unjust business practices and wrote about them to try to expose corruption.
Answer:
The main message was that the United states wouldn't interfere with any European affairs, and that the western hemisphere would be closed to European expansion.
Explanation:
This is because under the Monroe administration, they promised to stay out of European wars and affairs, and it was important for the still developing United States to strengthen it's army as well as it's economy.
It was the Truman Doctrine.
The Iron Curtain was the metaphorical barrier that seemed to split the Eastern Bloc from Western Europe. It was first mentioned by Churchill. The Berlin Wall was the physical embodiment of this "Curtain" that was constructed by the USSR to prevent Eastern Europeans from migrating. The Marshall Plan sent $13 billion to European nations to help them rebuild after WWII. The Truman Doctrine was specifically put in place to contain communism by aiding nations that were "at risk" so they would not turn to communism to solve their problems.
