(A) 1914
(B) 1916
(C) ** 1917
(D) 1918
EXPLANATIONS BELOW
Concept note-1: -Germany’s resumption of submarine attacks on passenger and merchant ships in 1917 became the primary motivation behind Wilson’s decision to lead the United States into World War I.
Concept note-2: -April 6, 1917: Two days after the U.S. Senate voted 82 to 6 to declare war against Germany, the U.S. House of Representatives endorses the declaration by a vote of 373 to 50, and America formally enters World War I.
Concept note-3: -U.S. Enters World War I On April 6, 1917, the United States formally declared war against Germany and entered the conflict in Europe.
Concept note-4: -In 1917, Germany’s attacks on American ships and its attempts to meddle in U.S.-Mexican relations drew the U.S. into the war on the side of the Allies. The United States declared war on Germany on April 6, 1917.