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Objective: examine the causes of America’s involvement in World War I.

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Presentation on theme: "Objective: examine the causes of America’s involvement in World War I."— Presentation transcript:

1 Objective: examine the causes of America’s involvement in World War I

2 · However, we traded food, weapons, oil, steel, and other goods far more with the Allied Powers than with the Central Powers. American Neutrality · Officially, the U.S. was a neutral country.

3 · Both the Allied Powers and Central powers used propaganda in order to support their cause by making their enemies seem savage. propaganda

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5 · However, Britain and Germany set up blockades around the British and German coasts. Freedom of the Seas · The U.S., as a neutral nation, claimed the right to trade with either side in the war.

6 · German submarines, called U-boats, torpedoed enemy ships and neutral ships trading with the enemy.U-boats The crew of a German UC-1 class submarine on deck. Introduced in 1915, the submarines of this class were employed mainly on mine- laying duties and carried up to twelve mines. German submarines sank 1,845,000 tons of Allied and neutral shipping between February and April 1917.

7 HMS LEGION moves alongside the damaged and listing HMS ARK ROYAL in order to take off survivors. The aircraft carrier was torpedoed by the German U-boat U 81 off Gibraltar. HMS ARK ROYAL sank the following day, November 13, 1941 (Note: “HMS” stands for “His/Her Majesty’s Ship” as part of the British navy.)

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10 · In 1915, a German submarine torpedoed the Lusitania, a British passenger ship, killing approximately 1,200 people, including 128 Americans.Lusitania 1915 painting depicting the sinking of the Lusitania by a German U-Boat

11 · Americans were infuriated with the destruction of the Lusitania.

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14 U-Boats Sink the Lusitania in 1915

15 – secret message from Germany to Mexico urging Mexico to attack the U.S. if the U.S. declared war on Germany Moving Toward War Zimmermann telegram: – Germany promised to help Mexico regain land it lost to the U.S. in the Mexican War. * The U.S. declared war on the Central Powers in 1917.

16 (above) Zimmermann Telegram as Received by the German Ambassador to Mexico, 01/19/1917 (right) decoded words

17 Zimmermann Telegram: Decoded Message

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