19. which foreign policy was the most successful in containing communism? explain.
· truman doctrine
· eisenhower doctrine
· domino theory
20. which domestic program was the most successful? explain.
· new frontier
· great society
21. which was the most influential event in the civil rights movement? explain.
· brown v. board of education
· montgomery bus boycott
· march on washington

Eisenhower Doctrine: To be fair, the Truman Doctrine also worked, but it did not work for all the countries. The Eisenhower Doctrine lived up to it's name, because it did not promise complete prevention of communism, but support in trying to stop communism from spreading. The Domino Theory was not a policy, but a term for the US's belief that if a country turns to communism, the nations surrounding them might also.

New Frontier: Overall, the two programs did mostly the same things, but New Frontier had a more expanded role & programs, making it a more successful domestic program, as it was able to cover more things the US prioritizes.

Brown v. Board of Education: While all of them are influential events, without a doubt, Brown v. Board of Education is the most influential of all of them, for it is a ruling from the U.S. Government, which would be put into effect and protected under the law and the power of the federal government. People cannot overstep this without breaking the law, making them a fugitive of the law.

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explanation:

b. used to hunting for their food.