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Archduke Ferdinand is Assassinated
Archduke Franz Ferdinand, of Austria-Hungary, is assassinated by a Serbian man, Gavrilo Princip. -
Austria-Hungary Declares War on Serbia
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Germany Declares War on Russia
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Belgium is Invaded by Germany
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Germany Declares War on France
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Great Britain Declares War on Germany
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Austria-Hungary Declares War on Russia
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Serbia Declares War on Germany
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USA Declares War on Austria-Hungary
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Great Britain Declares War on Germany
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President Wilson Declares American Neutrality
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Poison Gas is First Used Against Allies
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Sinking of the Lusitania
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Italy Declares War on Austria-Hungary
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Italy Declares War on Germany
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Germany Makes the Sussex Pledge
The Sussex Pledge said that Germany would warn ships before attacking. -
Millionsn of Soldiers Die at Somme River
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Bolsheviks Overthrow the Russian Government
Russia makes peace with Germany, and exits the war. -
USA Declares War on Germany
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American Troops Fight Three Battles
The battles were, Belleau Wood, Argonne Forest, and Chateau-Thierry. -
Central Powers Make a Truce with the Allies.
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US Senate Rejects the Treaty of Versailles
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Treaty of Versailles is Signed by Germany