Why were there food shortages in the United States during World War 1?

In 1917 Germany introduced unrestricted submarine warfare, which affected the food supply being imported into Britain. This made food shortages a serious problem and by 1918 malnutrition was seen in poorer communities. The Government introduced compulsory rationing in 1918.

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In 1917 Germany introduced unrestricted submarine warfare, which affected the food supply being imported into Britain. This made food shortages a serious problem and by 1918 malnutrition was seen in poorer communities.

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