He was the emperor of Germany during WWI.
Kaiser Wilhelm (William II)
This was a message that was sent to Mexico by the German government which tried to get Mexico to attack the U.S. to delay the U.S. entry into WWI.
The Zimmerman Note/Telegram
Was the heir to the throne of Austria-Hungary, and was assassinated because his country ruled over many different ethnic groups, many of whom wanted their own country.
Archduke Franz Ferdinand
Part of a nationalist Serbian gang who wanted to unite all "Slavic" peoples into a greater Serbia, including those Slavs living under Austrian-Hungarian control.
Gavrilo Princip?
The nations of the Triple Alliance.
Germany, Italy, and Austro-Hungary
He wanted to treat Germany family and have a "peace without victory", based on his 14 points which basically wanted to end secret alliances, spread democracy, and create a league of nations to help ensure peace.
Woodrow Wilson
This organization was formed after the war to help prevent future world wars by having the conflicting countries try to settle it by negotiation and non-violent means first.
The League of Nations
Leader of France who wanted to punish the Germans for their aggressive actions during World War I
Georges Clemenceau
This was Germany's plan for a two-front war; it failed miserably.
The Schlieffen Plan