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Archduke Franz Ferdinand
On Sunday, 28 June 1914, at approximately 10:45 am, Franz Ferdinand and his wife were killed in Sarajevo, the capital of the Austro-Hungarian province of Bosnia and Herzegovina, by Gavrilo Princip, 19 at the time, a member of Young Bosnia and one of a group of assassins organized and armed by the Black Hand. The event led to a chain of events that eventually triggered World War I. -
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WWI
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Austria declares war
On July 28, 1914, one month to the day after Archduke Franz Ferdinand of Austria and his wife were killed by a Serbian nationalist in Sarajevo, Austria-Hungary declares war on Serbia, effectively beginning the First World War. -
All of Europe at arms
August 1, 1914, four days after Austria-Hungary declared war on Serbia, two more great European powers—Russia and Germany—declare war on each other; the same day, France orders a general mobilization. -
Treaty of London
Russia, France, and Great Britain conclude the Treaty of London, which makes them officially the Allies. -
Enemies
Portugal passes a resolution that authorizes military intervention against Germany as Great Britain's ally. Turkey issues a general declaration of war against all Allies. -
the Dardanelles Campaign
The Dardanelles Campaign, also called the Gallipoli Campaign, begins. Campaign location: Turkey. 500,000 casualties -
The Zimmerman Note
Through the German embassy in Washington D.C., German foreign secretary Arthur Zimmermann sends a secret telegram to the Mexican government, proposing to aid Mexico in regaining "lost territories" from the U.S., referring to Texas, New Mexico, and Arizona. The telegram was intercepted and made public by March 1, 1917. -
Frustration
The United States severs diplomatic relations with Germany. Germany resumes unrestricted submarine warfare. -
Russian Revolution of 1917
Riots break out in Petrograd (St Petersburg), Russia. The first part of the Russian Revolution of 1917 begins. -
Woodrow Wilson's speech
US President Woodrow Wilson speaks to Congress, he urges to declare war on Germany and is of the opinion that "The world must be made safe for democracy." -
War!
The US enters World War I when Congress declares war against Germany. -
US takes action
The United States declares war on Austria-Hungary. Ecuador severs diplomatic relations with Germany. The Battle of Cambrai ends. This battle started on November 20, 1917. -
Battle of Amiens
The British start the Battle of Amiens, employing 450 tanks. The Battle of Amiens will end on August 12, 1918. The Battle of Amiens is also the beginning of the Allied Summer Offensive on the Western Front. This offensive will end on October 15, 1918. -
Nearing the end
Bulgaria surrenders and Germany's General Erich von Ludendorff asks his government to come up with peace terms. -
Peace
The wars is over -
Peace talks
President Wilson arrives at the Paris Peace Conference. The crowd grows wild when he appears. -
Treaty of Versailles
the Treaty of Versailles ended the state of war between Germany and the Allied Powers. It was signed on 28 June 1919, exactly five years after the assassination of Archduke Franz Ferdinand. -
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