The Federalist Papers were a series of documents, reportedly 85 different ones, that substantiated the ratification of the Constitution. Essentially made to defend it's ratification against the anti-federalists.
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<em>D. A memoir written by British prime minister Margaret Thatcher about her career</em>
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The answer is Native Americans were unable to win any frontier battles
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The viking who explored and settled Vinland was Leif Erikson.