<span>Germany's resumption of submarine attacks on passenger and merchant ships in 1917 became the primary motivation behind Wilson's decision to lead the </span>United States into World War<span> I.</span>
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The plague had large scale social and economic effects, many of which are recorded in the introduction of the Decameron. People abandoned their friends and family, fled cities, and shut themselves off from the world. Funeral rites became perfunctory or stopped altogether, and work ceased being done
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