Causes
Effects
Battles
Technology
Misc.
100
His assasanation of this Austria-Hungary heir, sparked the start of WWI.
Who is Archduke Ferdinand?
100
This document ended the war for good but had harsh effects on European countries. 
What is the Treaty of Versailles?
100
These two countries engaged in battle at Verdun.
What is Germany and France?
100
This made its first appearance in WWI, though it was slow and unreliable, it increased the areas they were able to access.
What is Tanks?
100
This type of combat is when opposing troops fight from ditches facing each other.
What is Trench Warfare?
200
This cause of WWI was the glorification of the military and involved countries competing to have a larger, stronger military.
What is Militarism?
200
Woodrow Wilson wrote these goals for the United States to keep the peace.
What is the Fourteen points?
200
What two countries started WWI.
What is Serbia and Austria?
200
This was first widely used in WWI by many navies in unrestricted warfare. This made attacking ships easier because they could attack from underneath.
What is Submarines?
200
In this telegram, Germany stated they would help Mexico reconquer land they lost to the United States. This was the final push for the US to enter the war.
What is Zimmerman Note?
300
The joining together of countries to strengthen their military.
What is Alliances?
300
This was an organization that was formed by the conference that ended WWI.
What is Leage of Nations?
300
German forces sunk this countries ship named the Lusitania, which was a cause for the US to enter the war.
What is Great Britain?
300
Was first used to observe enemies but eventually had a machine gun attached and was used as a weapon.
What is Airplanes?
300
One sided information designed to persuade, to keep up morale and support for the war.
What is Propaganda?
400
This was a sense of pride about a country. This also caused tension to rise in Europe. 
What is Nationalism?
400
This country was given blame for the war in the Treaty of Versailles.
What is Germany?
400
The Battle on the Eastern Front occurred between these countries’ borders.
What is Germany and Russia?
400
This was a paraphernalia of chemical warfare and was thrown at enemy lines to be inhaled and cause impairments.
What is Poinsonous Gas?
400
Countries in the war were divided into these two groups. One included Germany, Austria-Hungary, Ottoman Empire, and Bulgaria. The other group included Great Britain, France, Russia, Japan, and Italy.
What is the Allies and Central Powers?
500
This had two major consequences that led to more tension in Europe: countries would fight over land and the people in the colonized land, but the people would fight back because they wanted to be separate from the government. 
What is imperialism?
500
This war happened 21 years after WWI ended.
What is WWII?
500
The wars that took place along the battle fields of France became known as...
What is The Battles on the Western Front?
500
These two types of firearms had different functions. One was used to shoot multiple bullets at a time and the other was used to shoot bullets at long distance targets.
What is Machine Guns and Long Range Artillery?
500
This preceding event was very helpful for providing new technology in WWI warfare.
What is the Industrial Revolution?