The document discusses the sinking of the passenger ship Lusitania by a German submarine during World War 1. In May 1915, the unarmed passenger ship was torpedoed off the coast of Ireland by German submarine U-20. Within 18 minutes, the ship sank due to the torpedo strike and a second explosion, killing 1,119 of the 1,924 passengers and crew aboard. The sinking drew the United States closer to entering World War 1 on the side of the Allies against Germany.