60 likes | 268 Views
U.S. Foreign Policy through the Great War. Unrestricted Submarine Warfare. Unrestricted Submarine Warfare. German U-boats (submarines) sank merchant ships as well as passenger vessels that they believed might be carrying supplies to the Allies. Lusitania. A British passenger ship
E N D
U.S. Foreign Policy through the Great War Unrestricted Submarine Warfare
Unrestricted Submarine Warfare • German U-boats (submarines) sank merchant ships as well as passenger vessels that they believed might be carrying supplies to the Allies.
Lusitania • A British passenger ship • Attacked and sunk by a German U-boat in 1915 • More than 100 Americans dies as a result of this attack
Sussex Pledge • In 1916, a German U-boat torpedoed the Sussex, a French passenger ship • 2 Americans were killed • The German government promised that U-boats would warn ships before attacking after the United States threatened to cut off diplomatic ties • By 1917, German announced an end to the Sussex Pledge and the resumption of unrestricted submarine warfare • Less than a month later, the United States declared war
Zimmermann Note • Read the Zimmermann Note to get an idea of what is happening • Re-read the Zimmermann Note to answer the questions on the process guide
Close • What impact did the Zimmermann Note have on American public opinion? • How did the Zimmermann Note help to draw the United States into World War I? • Which factors do you think caused United States public opinion to turn from neutrality to supporting a declaration of war?