World War I ( ) was caused by among newly advanced nations in Europe and a failure of diplomatic relations. The war European and American life, the economies of Europe, and planted the seeds for a world war.

Definition- competition in building up , technology, and being for war.

Definition- agreements between nations to each other if attacked and attack back

Definition- Extreme pride and to your nation. Loyalty to fight for one’s nation.

Definition- American & European competition to other countries politically, economically and culturally.

Serbian nationalist Gavrilo Princip the Archduke Franz Ferdinand of Austria and his wife on

World War One officially begins

-Up until this point, the U.S. wanted to in Europe, so we practiced a policy known as (not getting involved in the war)

-BUT we are forced to join the war because of…

German U-Boat ( ) sinks British passenger ship

Leaves 1,198 people dead including US citizens

Americans are outraged!

President Woodrow Wilson demands the Germans stop unrestricted submarine warfare.

sends a coded telegram to Mexico offering to help Mexico take back territory from the United States in exchange for

The Zimmerman Telegram is by the United States

This event finally pushes the United States to join the war in 1917 on the side of the

New form of warfare in which soldiers fight from trenches dug into the battlefield– trading for extremely

- Area between the trenches that men had to cross to get to the enemy trench- the most dangerous area!

was President of the United States during WWI

Creator of the League of Nations

Wilson was pivotal in at the end of the war.

The war transforms European & American life

and governments of Europe, especially .

Plants the seeds for a 2nd World War.

4 great empires fall (German, Austrian-Hungarian, Russian, Ottoman Turks) which changes the entire political map of Europe

Generation of young men lost (called the )