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Assassination of Franz Ferdinand
The Archduke and his wife were both killed by Gavrilo Princip, a member of Bosnian -Serb nationalist group seeking to unite territories containing ethnic Serbs under Serbia's law. -
Austria-Hungary declares war on Serbia, beginning WW1
Austria-Hungary declared war on Serbia for killing their Archduke -
Austria-Hungary Invades Russia
The Austro-Hungarian Empire declares war on Russia -
Allied Forces halt German advance into France during the first battle of Marne
Allied Forces halt German advance into France during the first battle of Marne -
German submarine sinks the passenger liner Lusitania
German submarine sinks the passenger liner Lusitania after crossing from New York, to Liverpool, England. -
Italy switches sides
Italy, how was once a central power, has now become a allied power, and has declared war on Austria-Hungary -
Allied offensive begins the Battle of the Somme.
The battle of Somme begins -
Battle of Verdun ends
Battle of Verdun ends with 550,000 French and 450,000 German casualties. -
USA joins ww1
The United States declares war on Germany -
Russia signs armistice with Germany.
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Fourteen Points of Peace
President Woodrow Wilson presents to Congress his outline of Fourteen Points required for peace. -
Germany begins its final offensive of the war.
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Allied forces attach Meusse-Argonne
Allied forces begin the attack at Meusse-Argonne, the final offensive of the war. -
World War 1 ends
Germany signs the Armistice at Compiègne, ending World War I. -
Draft of the covenant of the League of Nations is completed.
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Treaty's are signed
Allied and German representatives sign treaty of Versailles. The United States signs treaty of guaranty, pledging to defend France in case of an unprovoked attack by Germany. -
Treaty of Versailles
Treaty of Versailles takes effect. -
Peace Treaties
United States signs separate peace treaties with Germany, Austria, and Hungary.