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United States.!
edward house
The Franco-Prussian War was not directly related to the entry of the US into World War I.
The Sussex pledge, was not associated with Germany's actions.
The American expeditionary force marked the beginning of the United States as a superpower.
To "distract" the US from entering WW1. Such proposal was however, discovered by British intelligence forces and forwarded to the United States, hastening the entry of the United States into WW1, against Germany.