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1914, World War - I begins
June 28 – Archduke Franz Ferdinand, heir to Austria-Hungary's throne, and his wife, Sophie, are assassinated by Serbian nationalist Gavrilo Princip while the couple were visiting Sarajevo.
July 28- Austria-Hungary declares war on Serbia.
August 1- Germany declares war on Russia.
August 3- Germany declares war on France.
August 4- The United Kingdom declares war on Germany after Germany invades Belgium.
August 6- Austria-Hungary declares war on Russia and Serbia declares war on Germany.
August 19- U.S. President Woodrow Wilson announces the U.S. will remain neutral- Isolation Policy
Key events in 1915
May 7 – The British ocean liner RMS Lusitania is sunk by German U-boat, U-20 Submarines May 23- Italy declares war on Austria-Hungary
Key events in 1917
January 19 Germany sends the secret Zimmerman Telegram to Mexico in an effort to entice Mexico to join the war. The British intercept and decipher the coded message.
April 6- The United States declares war on Germany. November 7- The Bolsheviks successfully overthrow the Russian government during the 1917 Russian Revolution.
December 17- The armistice agreed upon between the new Russian government and the Central Powers goes into effect.
Key events in 1918
January 8 – U.S. President Woodrow Wilson issues his Fourteen Points to peace.
March 3 – Russia signs the Treaty of Brest Litovsk, which is a peace treaty between Russia and the Central Powers.
November 9 – German Kaiser Wilhelm II abdicates and flees Germany.
November 11 – Germany signs the armistice at Compiegne, France. Fighting ends. World War I draws to a close in 1919
May 7 – The British ocean liner RMS Lusitania is sunk by German U-boat, U-20 Submarines May 23- Italy declares war on Austria-Hungary
Key events in 1917
January 19 Germany sends the secret Zimmerman Telegram to Mexico in an effort to entice Mexico to join the war. The British intercept and decipher the coded message.
April 6- The United States declares war on Germany. November 7- The Bolsheviks successfully overthrow the Russian government during the 1917 Russian Revolution.
December 17- The armistice agreed upon between the new Russian government and the Central Powers goes into effect.
Key events in 1918
January 8 – U.S. President Woodrow Wilson issues his Fourteen Points to peace.
March 3 – Russia signs the Treaty of Brest Litovsk, which is a peace treaty between Russia and the Central Powers.
November 9 – German Kaiser Wilhelm II abdicates and flees Germany.
November 11 – Germany signs the armistice at Compiegne, France. Fighting ends. World War I draws to a close in 1919
June 28, 1919- The Treaty of Versailles officially ends WWI.