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So whenever the Atlantic in either World War is brought up the German attempt to remove the British from the conflict by cutting off its shipping is mentioned. I'm wondering that even if the Kriegsmarine was more successful and effectively removed much of the exported materials and food to the Isles, would that have hurt the United Kingdom enough to drop out before Germany itself began losing? I'd imagine the situation is probably different between the 1910's vs. the 1940's. What are you're thoughts?