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Warm UP
① List and explain the MAINA causes of World War I
② I am collecting this…
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M A I N A
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I. By 1914 not only Europe was at war: A. All European colonies in Africa & Asia now join the
fight B. Imperialism and Alliances led this conflict to become a
WORLD war
War in the World
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World War I Military Technologies
I. During World War I the world was introduced to new industrial technologies designed for war
II. The industrialization of the world led to new military technologies that allowed armies to become more deadly
III. New military technologies include: A. Machine guns, tanks, airplanes, chemical weapons,
artillery
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Trench Warfare I. By 1915 the Allies and Central powers had both
dug deep trenches for protection
II. The area between the trenches became known as “no man’s land”
A. Neither side controlled it B. Full of barbed wire, causalities, shell craters
III. Soldiers would leave their trenches and rush to the enemy lines in hopes of taking control of their trenches
A. Casualties were high (machine guns & artillery)
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The American Response to WWI I. AtthebeginningofWWIthe
UnitedStateswantedtoremainneutral
A. ThewarwashappeninginEurope
II. USA supported neutrality! A. U.S.A. will support neither side B. President Woodrow Wilson issued
the Declaration of Neutrality in 1914
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CausesofAmericanEntryIntoWWI
① UnrestrictedSubmarine(U-boat)warfare② ThesinkingoftheLusitania③ SussexPledgeisbroken④ TheZimmermanTelegram
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The US Economy in World War I I. The U.S.A. had much closer ties with Great Britain
(Allied Powers) A. Economic, Linguistic & Political B. Most Americans were anti-German and supported the Allies
II. Britain and France bought products in large amounts from American manufacturers
III. American banks gave loans to Allies IV. The U.S.A. is supporting the Allies without technically
supporting the Allies
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Cause #1 Unrestricted Submarine Warfare
I. Germany is upset that the U.S.A. is assisting the Allied forces & not them
II. Germany is kept out of American trade by the British
naval blockade III. Germany begins unrestricted submarine warfare to try
and break through British blockade. A. Germany used U-boats- undersea boats, incredibly deadly B. Attack any & all ships assisting the Allies including American
ships C. Killing innocent people on non-military ships angered the USA
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CapturedGermanU-boatinaBri3shdrydock
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Cause#2TheSinkingoftheLusitania
I. TheLusitaniawasaBriNshpassengershipthatsetsailfromNewYorkcarryingAmericanciNzens.
A. The Germans warned Americans their merchant ships might be hit.
II. TheLusitaniawassunkonMay7,1915offthecoastofIrelandIII. 1,198lost;128USciNzensI. GermanyclaimedtheLusitaniawascarryingcontraband(war
materials:guns,ammuniNon…itwas!!
II. TheUSAisupsetwiththelossofAmericanlivesandGermany’ssubmarinepolicies
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UnitedStatesNavyWarPropagandaPoster
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The Sinking of the Lusitania
I. GermanyconNnuedunrestrictedsubmarinewarfareandsunkanothership–TheSussex,killing2moreAmericans
II. PresidentWilsonandtheAmericanpeopleareveryupset
withGermanyA. ThreatentobreakoffinternaNonalrelaNonsandjointheAllies
III. InresponseGermanyissuedtheSussexPledgeA. Germanywillnot“tosinkmerchantorpassengershipswithout
warningandwithoutsavinghumanlives”
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Cause#3SussexPledgeBroken
I. AferissuingtheSussexPledgeinAugustof1915February1,1917GermanybrokeitinFebruary1916
II. GermanyaiackedanothercivilianshipkillinginnocentpeopleàAmericans
III. Germanypledgedtosinkallships(includingAmericanones)
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Cause #4 The Zimmerman Note (1917)
I. British government intercepts a secret message sent from Germany to the Mexican government
II. The Telegram stated Germany would continue unrestricted
submarine warfare on the U.S.A. III. The telegram also proposed an alliance between Germany
and Mexico A. If Mexico attacked the United States Germany promises to
help Mexico fight the U.S.A. B. Germany would help Mexico get the land they lost to the
United States back C. Americans were incredibly upset that Germany was going
behind our back to get Mexico to attack the USA
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U.S.A. Declares War I. April 2, 1917 President Wilson addresses Congress and
asks for a declaration of War against Germany A. Unrestricted submarine warfare, Breaking of Sussex Pledge,
The sinking of Lusitania & the Zimmerman Note
II. April 6, 1917 U.S.A. officially declares war on Germany
III. December 7, 1917 U.S.A. also declares war on Austria-Hungary
IV. The U.S.A. is officially joining World War I on the side of the Allies
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ARE YOU WITH ME??
� List and explain the four causes of American entry into World War I
1)
2)
3)
4)