The four main causes of WWI were nationalism, imperialism, militarism, and the alliance system. Nationalism led countries to prioritize their own interests over cooperation. Imperialism caused conflicts over colonies. An arms race resulted from militarism. The network of alliances between European powers amplified the conflict, pulling more countries into war when it began.

2. Causes of WWICauses of WWI
 Four Major factorsFour Major factors
(1)(1) NationalismNationalism: belief that the interests of: belief that the interests of
one country were more important thenone country were more important then
cooperation among countriescooperation among countries
(This led to competition)(This led to competition)
(2)(2) ImperialismImperialism led to conflictsled to conflicts
(3)(3) MilitarismMilitarism Arms raceArms race
(4)(4) Alliance systemAlliance system banning togetherbanning together

3. Nationalism, Alliances, andNationalism, Alliances, and
WWIWWI
 http://www.history.com/topics/world-war-i/worldhttp://www.history.com/topics/world-war-i/world
 http://www.history.com/topics/world-war-i/worldhttp://www.history.com/topics/world-war-i/world

4. Causes:Causes: Read pg. 579 and find oneRead pg. 579 and find one
supporting fact for each cause belowsupporting fact for each cause below
1.1. Nationalism-Nationalism-
2.2. Imperialism-Imperialism-
3. Militarism-3. Militarism-

5. Today’s work 5/22Today’s work 5/22
Work on “Causes ofWork on “Causes of
World War One” guidedWorld War One” guided
readingreading
Due by end of classDue by end of class
Weds. 5/24Weds. 5/24

7. Alliance SystemAlliance System
 The numerous treaties created amongThe numerous treaties created among
countries separated Europe into 2 main groups.countries separated Europe into 2 main groups.
• Triple Entente-Allied PowersTriple Entente-Allied Powers: France,: France,
England, RussiaEngland, Russia (USA)(USA)
• Triple Alliance-Central PowersTriple Alliance-Central Powers::
Germany, Austria-Hungary, OttomanGermany, Austria-Hungary, Ottoman
EmpireEmpire

10.  http://www.history.com/topics/world-war-i/worldhttp://www.history.com/topics/world-war-i/world

11. Assassination leads to WarAssassination leads to War
 19141914:: Archduke Franz FerdinandArchduke Franz Ferdinand waswas
assassinated in Sarajevoassassinated in Sarajevo
 He was the heir to the throne of Austria-He was the heir to the throne of Austria-
HungaryHungary
 His killer was a Serb: Serbia now had toHis killer was a Serb: Serbia now had to
be punishedbe punished
 The Alliance System went into full effectThe Alliance System went into full effect

12.  Austria declared war onAustria declared war on
Serbia as a result.Serbia as a result.
 Serbia was an ally ofSerbia was an ally of
RussiaRussia. When Russia. When Russia
declared war on Austria-declared war on Austria-
Hungary, the TripleHungary, the Triple
Alliance and Triple EntenteAlliance and Triple Entente
kicked in, bringing thekicked in, bringing the
entire continent to war.entire continent to war.

15. The Fighting BeginsThe Fighting Begins
 Germany invaded BelgiumGermany invaded Belgium
 England and France could not saveEngland and France could not save
Belgium but they did stop the GermanBelgium but they did stop the German
advanceadvance
 The start ofThe start of Trench WarfareTrench Warfare: fighting: fighting
between fortified ditchesbetween fortified ditches

17. Trench WarfareTrench Warfare
Trenches used for protection andTrenches used for protection and
storage for weapons, suppliesstorage for weapons, supplies
Each side fired and then retreatedEach side fired and then retreated
Neither side making any realNeither side making any real
gainsgains
Resulted in massive casualtiesResulted in massive casualties

19. http://www.history.com/topics/world-war-
i/world-war-i-history/videos/life-in-a-trench

20. No Man’s LandNo Man’s Land

21. No Man’s LandNo Man’s Land

22. Trench WarfareTrench Warfare
Pros Cons
Do you think trench warfare was an effective
strategy? Why or why not?

24. German U-boat attacksGerman U-boat attacks
 BritishBritish blockadedblockaded German coast toGerman coast to
prevent weapons from getting throughprevent weapons from getting through
(also prevented food from getting in)(also prevented food from getting in)
 Resulted in famine in GermanyResulted in famine in Germany
 Germany responded with a counter-Germany responded with a counter-
blockade with U-boatsblockade with U-boats
((Unterseeboot) –Unterseeboot) – sinking any USsinking any US
Or British ship in AtlanticOr British ship in Atlantic

25. ResultsResults
 British passenger shipBritish passenger ship LusitaniaLusitania was sunk,was sunk,
killing 1198 total, and 128 Americans onkilling 1198 total, and 128 Americans on
boardboard
 Germany declared any boat (hostile orGermany declared any boat (hostile or
neutral) would be sunkneutral) would be sunk

27. Ships sunk by German U-boatsShips sunk by German U-boats

28. The US enters the WarThe US enters the War
 The US was neutral for the beginning ofThe US was neutral for the beginning of
the Warthe War
 However,However, after the British shipafter the British ship Lusitania,Lusitania,
was sunk by a German U-boatwas sunk by a German U-boat, killing, killing
1000s including 128 Americans1000s including 128 Americans
 Then Germany proposed an alliance withThen Germany proposed an alliance with
MexicoMexico
 Congress declares war on Germany onCongress declares war on Germany on
April 6, 1917April 6, 1917

29. Sinking ofSinking of LusitaniaLusitania

30. US and the WarUS and the War
 US was not prepared- only 200,000US was not prepared- only 200,000
service menservice men
 Passed thePassed the Selective Service ActSelective Service Act requiringrequiring
all men to register to be selected to serveall men to register to be selected to serve
 Needed to institute aNeeded to institute a draftdraft to build a largeto build a large
armyarmy
 Over half of US men served in FranceOver half of US men served in France

32. US helping the AlliesUS helping the Allies
 US and England use the convoy system toUS and England use the convoy system to
protect merchant ships against theprotect merchant ships against the
German U-boatsGerman U-boats
 US forces arrive in Europe just in time toUS forces arrive in Europe just in time to
stop a German advance on Parisstop a German advance on Paris
 Germany, exhausted from war, finallyGermany, exhausted from war, finally
agreed to an armistice (truce) on Nov. 11,agreed to an armistice (truce) on Nov. 11,
19181918

33. Agenda 6/2/16Agenda 6/2/16
1.1. Finish Weapons packet (50Finish Weapons packet (50
points) turn inpoints) turn in
2.2. Finish WWI crossword/reviewFinish WWI crossword/review
(30 points)(30 points)
3.3. Quiz Fri.-Quiz Fri.- Causes of WWICauses of WWI
4.4. Lost BattalionLost Battalion moviemovie

34. Convoy SystemConvoy System
 Heavily guarded ships carrying men andHeavily guarded ships carrying men and
weapons across Atlantic to Europeweapons across Atlantic to Europe
 Cut shipping losses in halfCut shipping losses in half

36. After the WarAfter the War
 22 million dead22 million dead
 Suffering and destruction across EuropeSuffering and destruction across Europe
 Wilson’s 14 points for peaceWilson’s 14 points for peace

1414thth
point called for a League of Nations:point called for a League of Nations:
international organization would addressinternational organization would address
problems between countries to stop war,problems between countries to stop war,
creating lasting peacecreating lasting peace

The US never joined the League of NationsThe US never joined the League of Nations

37. Christmas Truce 1914Christmas Truce 1914
 http://www.history.com/topics/christmas/historyhttp://www.history.com/topics/christmas/history
 https://www.youtube.com/watch?https://www.youtube.com/watch?
v=y6v0Xr6ewUU- Silent Night (Stillev=y6v0Xr6ewUU- Silent Night (Stille
Nacht)Nacht)

38. http://www.history.com/topics/world-war-http://www.history.com/topics/world-war-
i/world-war-i-history/videos/the-one-thing-i/world-war-i-history/videos/the-one-thing-
you-should-know-about-wwi?you-should-know-about-wwi?
m=528e394da93ae&s=undefined&f=1&freem=528e394da93ae&s=undefined&f=1&free
=false=false

39. Legacy of WWILegacy of WWI
 http://www.history.com/topics/world-war-http://www.history.com/topics/world-war-
i/world-war-i-history/videos/legacy-of-i/world-war-i-history/videos/legacy-of-
world-war-i?world-war-i?
m=528e394da93ae&s=undefined&f=1&frem=528e394da93ae&s=undefined&f=1&fre
e=falsee=false

40. Did WWI lead to WW2?Did WWI lead to WW2?
 http://www.history.com/topics/world-war-http://www.history.com/topics/world-war-
i/world-war-i-history/videos/did-wwi-lead-i/world-war-i-history/videos/did-wwi-lead-
to-wwii?to-wwii?
m=528e394da93ae&s=undefined&f=1&frem=528e394da93ae&s=undefined&f=1&fre
e=falsee=false