Final answer:
The United States' entrance into World War I was not due to Germany's declaration of war on the United States.
Step-by-step explanation:
The reason for the United States' entrance into World War I that was NOT listed as one of the options is the declaration of war by Germany on the United States. The United States entered the war in April 1917 after remaining neutral for the first few years. The main reasons for their entrance were the sinking of the Lusitania by a German U-boat, the discovery of the Zimmerman telegram which revealed a proposed alliance between Germany and Mexico against the United States, and the violation of American trade rights by Germany.
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