On May 7, 1915, the RMS Lusitania was sunk
by a German U-boat during World War I. Of the 1,959 people on board, 1,198 died in this disaster. When the U.S. heard that 128 of the dead were Americans, they were furious. Although the Germans had claimed that the Lusitania
was a valid military target because it had been war materials, popular belief at the time was that it was solely a passenger vessel. The sinking of what seemed a completely neutral ship, spurred the U.S. to enter into World War I against the Germans.
Recently, divers explored the wreckage of the Lusitania, situated eight miles off of the coast of Ireland. In the hold of the Lusitania, the divers found approximately four million rounds of U.S.-made Remington .303 bullets. The discovery supports Germany's claim that the Lusitania had been used to shuttle war materials. The find also supports the theory that the second explosion on the Lusitania was caused by munitions on board rather than a second torpedo from the U-boat.