History of the United States II / Unit 8 USH2 1061 short lesson, about 20 seconds
Unrestricted Submarine Warfare
Captions available
The idea
Germany resumed unrestricted submarine warfare early in nineteen seventeen, gambling that it could win before American troops arrived in strength.
In practice
Digital History's figure: half a million tons of Allied shipping sunk each month.
Where people slip
Germany hoped to cripple Britain's economy. The anchor says it aimed to end the war before the United States could tip the balance.
Your place on the trail
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Builds on
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