Increasing military strength or stockpiling weapons

When different nations promise to help one another if any one of them comes under attack

This event was the spark that set World War I in motion

Competition for empires or colonies 

Alliance that included Germany, Austria Hungary, Italy and the Ottoman Empire

The Alliance that included Great Britain, France, and the United States

Neutral country invaded by Germany

Country that refused to honor its alliance with the Central Powers so it switched to the Allied Powers in 1915

This country was the first country to declare war in World War I

An area where soldiers faced mud, rats, and rotting feet, however, soldiers were sheltered from bullets and artillery shells

Weapon used in World War I, capable of firing 500 to 600 bullets per minute

First used by Germans, it could kill or seriously injure anyone who breathed it

First used to break the stalemate of trench warfare, they could cross no-man's land and fire on the enemy at close range

This weapon eventually brought the U.S. into the war because it destroyed U.S. supplies headed to Britain

The U.S. tried this stance because they thought the war did not concern them

Americans that favored the Central Powers

Those who do not believe in violence

Those who believed the war was wrong because rich business owners would get rich off it.  They believe the public should own key industries.

Used by both sides, it was used to influence public opinion

Used by the Allies, it eventually caused Germans to starve to death and created "one sided trade"

Two passenger ships sunk by German U-boats

A plan where Germany offered money to those injured on a certain ship and promised to warn neutral ships before attacking

A secret telegram sent by Germany to form an alliance with Mexico.  It set off anti-German feelings in the U.S.

Country that withdrew from World War I and overthrew its monarch for a more democratic government

The U.S. raised an army quickly through this process

Besides the men aged 21-30, two groups that served in the armed forces

A tactic used by the Allies to protect supply ships crossing the Atlantic Ocean

Since Russia withdrew from World War I and signed a peace treaty with Germany, Germany needed to move troops to this front

A nickname for American soldiers because of the buttons on their uniforms or because of how they cleaned their white belts

An agreement to end fighting

With this countries entry into the war in 1917, Germany realized their hopes of winning the war were over

World War I fighting ended on this date

This was the new U.S. labor force during World War I

Something Americans were encouraged to do during World War I when it came to food and fuel

Group that helped factories shift to war related goods and it set prices of goods

This made it a crime to say, print, or write any criticism about the government

This provided stiff penalties for spying

Woodrow Wilson believed the people had the right to decide how they should be governed

Place where 27 nations gathered to rebuild a postwar world and restore peace 

Woodrow Wilson's outline for peace

They were called the Big Four countries

Woodrow Wilson wanted to create a group of countries whose purpose was to preserve peace and prevent another world War

The European Allied countries rejected Woodrow Wilson's peace plan and created 

Germany had to give up

The Treaty of Versailles punished Germany by demanding

Woodrow Wilson did not get this group to approve of the Versailles Treaty

The reason we did not join the League of Nations

Woodrow Wilson's political party

How many American trading ships were sunk in World War I prior to the U.S. entering the war?

The years of World War I