I think the answer to that question is that the United States would go to whatever length to contain the spread of communism and stop the United States' former ally the soviet union.
Original jurisdiction is the power to hear a case for the first time. Whereas "appellate jurisdiction" is the power to review the decision made by a lower court which may or may not have had original jurisdiction.
Did you try ' Foot Step' ?
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they acted as a barrier to further settlement to the west
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