Answer:
b. an effort to talk long enough to prevent a vote on a bill.
Explanation:
A filibuster is a political process which consists of debating over a proposed piece of legislation in a way that purposely delays or prevents having to make a decision on it. This usually takes place in a Parliament or Congress, as these are generally the bodies of government that deliberate on legislation. This form of obstruction in a legislature is a powerful political device.
In the early ages America was a slave and segregated country still after the Civil war there was the Separate but Equal Jim crow Laws that continues Segregation but not in a direct manner
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D) is correct , all of the above
The answer would be D, President Harry S. Truman pledged that the United States would help any nation resist communism in order to prevent its spread. His policy of containment is known as the Truman Doctrine