This man's assassination sparked the start of the war.
Who is Archduke Franz Ferdinand?
This is the year that WWI began.
What is 1914?
The sinking of this ship angered Americans into joining WWI.
What is Lusitania?
The most important need for the Allies when the U.S. joined the war was this.
What is food?
At the Paris Peace Conference, this treaty was signed in January 1919, officially ending the armistice and the war.
What is the Treaty of Versailles?
This system forced countries to defend one another.
What are alliances?
These were the two sides of WWI.
Who are the Allied and Central Powers?
The Allies utilized this to help bring the U.S. into the war, even to the point of lying about German events.
What is propaganda?
At the start of WWI, the U.S. had about 120,000 soldiers. By the end of the war, they had this many million.
What is 4?
Woodrow Wilson argued that a League of Nations was necessary to make sure WWI never happened again, which was part of his...
What are the 14 points?
What is nationalism?
This country kicked off WWI by declaring war on Serbia.
What is Austria-Hungary?
This message tried to convince Mexico to attack the U.S.
What is the Zimmerman Telegram?
The War caused these two groups to join the workforce more than they ever had before.
Who are women and African Americans?
By the end of the war, this many people had died.
What is 15-20 million?
This refers to building up a strong army, and heightened the stakes for WWI.
What is militarism?
The development with this, an armored vehicle to traverse open plains, along with mines, grenades, poison gas, and more, made WWI the deadliest war of all time.
What are tanks?
This German policy allowed their underwater ships to attack ships as they saw fit, leading to many civilians dying.
What is unrestricted naval warfare?
These were sold to raise money for the war in America.
What are war bonds?
This was the leader of the American Expeditionary Force during WWI.
Who is John J. Pershing?
This competition for colonies led people to seek land outside of their regions.
What is imperialism?
This is the kind of warfare that dominated WWI.
What is trench warfare?
On this day, the U.S. officially joined WWI.
What is April 3rd, 1917?
American soldiers were known as this when they entered the war, because of their un-harmed status.
What are doughboys?
This German leader fled Germany in early November 1918, effectively giving up the war.
Who is Kaiser Wilhelm II?