Warm UP

①  List and explain the MAINA causes of World War I

②  I am collecting this…

M A I N A

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

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

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)

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

CausesofAmericanEntryIntoWWI

①  UnrestrictedSubmarine(U-boat)warfare②  ThesinkingoftheLusitania③  SussexPledgeisbroken④  TheZimmermanTelegram

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

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

CapturedGermanU-boatinaBri3shdrydock

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

UnitedStatesNavyWarPropagandaPoster

The Sinking of the Lusitania

I.  GermanyconNnuedunrestrictedsubmarinewarfareandsunkanothership–TheSussex,killing2moreAmericans

II.  PresidentWilsonandtheAmericanpeopleareveryupset

withGermanyA.  ThreatentobreakoffinternaNonalrelaNonsandjointheAllies

III.  InresponseGermanyissuedtheSussexPledgeA.  Germanywillnot“tosinkmerchantorpassengershipswithout

warningandwithoutsavinghumanlives”

Cause#3SussexPledgeBroken

I.  AferissuingtheSussexPledgeinAugustof1915February1,1917GermanybrokeitinFebruary1916

II.  GermanyaiackedanothercivilianshipkillinginnocentpeopleàAmericans

III.  Germanypledgedtosinkallships(includingAmericanones)

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

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

ARE YOU WITH ME??

�  List and explain the four causes of American entry into World War I

1) 

2) 

3) 

4)