Are you looking for a specific word? The answer is border but I see you've included this in your question so I believe you do not understand the concept.
Containment is the policy that the us established to stop the spread of communism.
B- <span>The United States was unprepared, and most of the U.S. fleet was destroyed. That is the correct answer. Hope that helps.
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<span>Four clear options emerged for the freedmen and women after the war: obtain land, move, work for former masters, or sharecrop. Some freedmen were able to obtain their own personal land to work to support themselves and their families. Others opted to move to the cities and the North to find work that was not agrarian based. Directly after the war, plantation owners established a contract labor system that employed their former slaves</span>
Quartering Act, Massachusetts Government Act, Boston Port Act,Administration Justice Act