WORLD HISTORY

Detailed explanation-1: -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.

Detailed explanation-2: -In 1917, USA entered World War 1, after repeated warnings given to Germany, as it was sinking merchant ships and later, Germany sunk Houstanic, an american boat, after that event President called for a declaration of war against Germany and was granted by the congress.

Detailed explanation-3: -The House concurred two days later. The United States later declared war on German ally Austria-Hungary on December 7, 1917. 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.

Detailed explanation-4: -On April 2, President Wilson asked Congress to declare war against Germany specifically citing Germany’s renewed submarine policy as “a war against mankind. It is a war against all nations.” He also spoke about German spying inside the U.S. and the treachery of the Zimmermann Telegram.