AIM: How did Americans react to the breakout of War in Europe and why did the U.S. finally enter in 1917? Q. What were the results of both the stalemate and trench warfare in Europe? A. No side could win a decisive victory resulting in millions of lives lost.

How did Americans React? I. American citizens were divided. Many favored the Allies, due to ties of language, history and culture. But, many immigrants of German, Austrian, and Irish descent favored the Central Powers. II. The U.S. economy boomed. Manufacturers and farmers were filling orders for food and war goods. Most of the trade was with the Allies. III. Both the Allies and Central Powers waged a war of propaganda (ideas to help a cause) in America.

Why did the U.S. Finally enter the War in 1917? I. Submarine warfare angered the U.S.! German U-Boats torpedoed American ships trading with the Allies. II. The Lusitania was a British passenger ship that was sunk by the Germans. 1200 people were killed, including 128 Americans.

III. Zimmerman Telegram A. Britain intercepted the telegram. Germany tried to convince Mexico to declare war on the U.S. Mexico would receive part of the U.S. if they won the war. IV. Russian Revolution A. Czar Nicholas II was removed from power in Russia. The new government promised democratic reforms which made it easier for the U.S. to come into the war on Russia’s side.