The policy created in 1947 and used by the Americans against Communism was called Group of answer choices massive retaliation. mutually assured destruction (MAD). containment. appeasement.

Containment.

Explanation:

The policy of containment is a foreign policy proposed by the government under the Presidency of Harry S. Truman to limit the powers of the Soviet Union and its spread of communism after World War II in 1947. This policy was a reply to the Soviet Union when it started to expand its communist control in Eastern Europe and Asia. The idea of containment policy was to make countries well-off enough to avoid the lure of the Soviet Union. It provided support for countries that rejected communism. Americans fought on the sides of the nationalists to try to stop the spread of communists.

the completion of the erie canal spurred the first great westward movement of american settlers, gave access to the rich land and resources west of the appalachians and made new york the preeminent commercial city in the united states.

the federalist party which advocated strong centralization dominated the united states government till 1800. so 1800 election transformed the power from one party to another party for the first time and was thus a turning point in american history. so jefferson called it "revolution of 1800".

explanation: