The RMS Lusitania, a British ocean liner renowned for its speed and luxury, met a tragic fate on May 7, 1915, when it was torpedoed by a German U-boat off the coast of Ireland. This devastating incident resulted in the loss of nearly 1,200 lives, including 128 Americans, and played a pivotal role in shifting public opinion in the United States, contributing indirectly to its entry into World War I. (britannica.com)