Unrestricted Submarine Warfare
Unverified
Date
January 31, 1917
Type
World
Author
hjwilson1975
Location
Berlin,
Berlin,
Germany
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Categories
Political & Governance
Military & Conflict
Event Details
On January 31, 1917, Germany announced the resumption of unrestricted submarine warfare, declaring that U-boats would sink any ship within the war zone around Britain, including neutral merchant vessels.
Consequence: This policy was a primary factor in bringing the United States into World War I. President Woodrow Wilson severed diplomatic relations with Germany shortly after.