Which event most clearly influenced the u. s. decision to enter world war i on the allied side? question 1 options: a britain and france were members of the triple entente. b. germany decided to end u-boat attacks on commercial ships. c. britain imposed an embargo on germany that created terrible hardship among german civilians. d. germany sunk the lusitania, causing 128 american deaths. save

D. Germany sunk the Lusitania, causing 128 American deaths.

Explanation:

The sinking of the RMS Lusitania by Germany was one of the main reasons why the United States decided to enter World War I. The Lusitania was a British ship that was sunk on May 7, 1915 off the coast of Ireland by a German U-boat. The ship was not armed for battle, and 128 American passengers died in this disaster. This shifted public opinion in the United States, leading to a declaration of war two years later.