- Alfred vonSchlieffen: The general of the German forces who came up with the plan to crush France in the west, and then deal with Russia in the east.
- Armistice: The term that's used to describe the day that WWI ended.
- Fourteen Points: The policy that Woodrow Wilson pushed at the end of WWI that was designed to keep the peace in Europe.
- Franz Ferdinand: The Arch-Duke who was heir to the throne of Austria-Hungary who was shot in 1914.
- Gavrilo Princip: The 19 year old male who shot Franz Ferdinand.
- Georges Clemenceau: The leader of France during WWI who wanted to punish Germany for what they did in WWI.
- Leage of Nations: The organization that was set up at the end of WWI that was created to be an international association whose goal would be to keep peace amoung nations.
- Militarism: The policy of glorifying military power and keeping an army prepared for war.
- Nicholas II: The Tsar of Russia during WWI who wasn't a very good leader.
- Otto vonBismark: The leader of Germany just before WWI who set up a bunch of treaties that were designed to keep Germany safe in any situation.
- Treaty of Versailles: The treaty that ended WWI that included the "war guilt" clause.
- Trench Warfare: The type of warfare where troops are lined up for miles in trenches.
- Triple Alliance: The Alliance between Brtain, France, and Russia.
- Triple Entente: The alliance between Germany, Italy, and Austria-Hungary.
- Wilhelm II: The leader of Germany during WWI who was stubborn and was eager to show the rest of the world how powerful Germany had become.
- Winston Churchill: The prime minister of Britain during WWI
- Woodrow Wilson: The President of the United States during WWI.