Unrestricted submarine warfare is the practice of using submarines to attack and sink all forms of enemy shipping, whether they are military or civilian. It is most closely associated with the First World War when Germany's decision to use USW brought the US into the war and led to their defeat.
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It would be Prophet Muhammad’s
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She was tried and sent away from Massachusetts.
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It was traded for other useful goods.
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Salt was often a foreign, luxurious material not commonly found in European countries.