The RMS Lusitania was one of the breaking points of The Great War. The ship was going from New York to Liverpool and had some trouble on the way. While they were passing Ireland a German submarine had torpedoed them in the hull. The ship was full of ammunition and guns so it exploded and no one could get out. It exploded once from the torpedo and a second time for the guns and ammo. The Germans had warned them that they would sink the ship but they left anyway.