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The renewal of unrestricted German submarine warfare had devastating effects on shipping in 1917. In terms of tonnage, the Germans sank 540,000 tons in February 1917, 578,000 in March and 874,000 tons in April. Anti-submarine measures by the Allies, however, began to reduce this calamity.

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What statement explains why a German submarine sunk the Lusitania?

Germany practiced unrestricted submarine warfare.


What German military tactic eventually helped draw the US into the Great War?

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The Sussex Pledge


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What words pertaining to World War 1 begin with the letter U?

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The German policy of unrestricted submarine warfare against shipping. This led to the sinking of the Lusitania in 1915. Great Britain and France were major trading partners.


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