The answer is D. Isolationism was a period in Americas history when they stayed out of wars and affairs that had nothing to do with itself. Dollar is the american currency, big stick has to do with militarism, good neighbor has to do with helping neighbors and allies.
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King Henry VIII had Thomas More beheaded because Thomas More had refused to recognize the king as the head of the Church of England. Beheading was a common form of execution in those days. The correct answer is D.