7 mai 1915 - Lusitania

Description:

War at sea initiated US involvement. Americans initially supplied both the Allies and central Powers. Blockade brought sinking of US ships. German sub sank the British ship Lusitania. Texans were angry when a texan person was killed trying to save a woman and baby.
http://www.slate.com/articles/news_and_politics/history/2015/05/lusitania_sinking_reliving_the_infamous_german_u_boat_attack_through_the.html