Chapter 21

Aim: to identify the causes of WWI

Do now: How can expanding your empire lead to war?

Chapter 21Section 1

Origins of WWI 1914 tensions in Europe erupted into war America was a world power but tried to keep out of war in

Europe

Chapter 21Section 1

Militarism Imperialism leads to

rise in militarism = glorification of the military

Military leaders gain political support

Chapter 21Section 1

Alliance Systems With tensions, alliances

formed Germany aligned with

Austria-Hungary Britain and Russia

pledged to come to one another's aid if attacked

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Imperialism Imperialism = building

empires by imposing outside rule over peoples around the rule.

European nations competed for trade and territory

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Nationalism Different groups sought

to break free from the nations that captured them

Nationalism = pride in ones country

Chapter 20: Section 1

Chapter 21

Aim: to identify the start of WWI

Do now: What are the main causes that lead to WWI?

Chapter 21Section 1

War Begins June 28, 1914 Franz

Ferdinand assassinated by Serbian national

July 29, 1914 Austria-Hungary declared war on Serbia

Alliance system drew more than 20 countries into war

Chapter 21Section 1

War Begins Allies = Britain, France

and Russia

Central Powers = Germany, Austria-Hungary and Ottoman Empire

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Deadliest War Both sides hoped for

quick victory Stalemate = deadlock or

standstill, lasted 3 years Western Europe,

soldiers use Trench Warfare = soldiers fire on one another from opposing lines of dug out trenches

Chapter 21Section 1

Deadliest War Technological advances make war more lethal Scouting planes, armored tanks and rapid fire machine

guns raised the death toll Poison gas most feared, used by both sides

Chapter 20: Section 1

Chapter 21

Aim: to explore how the U.S. enters WWI

Do now: What single event led to the start of WWI?

Chapter 21Section 1

American Neutrality President Woodrow

Wilson sought to keep U.S. out of war

Americans divided between who they supported

Britain used propaganda to win over the Americans

Propaganda= spread of information designed to win support for a cause.

Fight for Freedom

War bonds, help the guardians of your happiness

Chapter 21Section 1

Supplying the Allies Legally, American firms

were free to sell to both sides

Most American trade was with the Allies

Britain blockaded supplies to Germany

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The Lusitania Germans had large

supply of U-Boats May 7, 1915 a U-Boat

sank a British passenger ship call the Lusitania

128 of the 1,200 people that died were Americans

Chapter 21Section 1

Entering the War Wilson was reelected on

the slogan “He kept us out of war”

He called on the warring nations for peace

A German note to Mexico known as The Zimmermann Telegram was intercepted by the British in 1917

Chapter 21Section 1

Entering the War The telegram proposed

that Mexico join the war, in turn, Germany would help them “reconquer” New Mexico, Texas and Arizona

The Zimmerman Telegram was released to the press, angering all Americans

Chapter 21Section 1

Declaring War On April 2, 1917 Wilson asked Congress to declare war

against the Central Powers After nearly three years, the United States was at war

Chapter 20: Section 1