During World War I, Britain planned to starve Germany and Austria-Hungary into submission by using its powerful navy. It hoped to cut off supplies from the outside world by maintaining a blockade of enemy ports. This strategy had far-reaching consequences.
The Royal Navy used a policy of "distant blockade" to prevent ships from entering the English Channel and the North Sea. With French and Italian assistance, a similar blockade was maintained in the Adriatic Sea. Neutral ships were theoretically allowed to continue trading, but Britain gradually broadened the definition of "contraband" cargo and, beginning in early 1915, began seizing all commodities bound for the Central Powers.
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