World War I

World War I

• July 28, 1914 - World War I begins as the Ottoman Empire declares war on Bosnia.
  
• July 29, 1914 - Central forces bomb Belgrade, Belgium.
  
• August 4, 1914 - Central forces invade Belgium.
  
• August 4, 1914 - President Wilson issues a proclamation of neutrality.
  
• August 15, 1914 - The Panama Canal opens for business.
  
• August 25, 1914 - Central forces bomb Antwerp, Belgium.
  
• August 25, 1914 - Central forces invade France.
  
• August 30, 1914 - Central forces bomb Paris, France.
  
• September 9, 1914 - Allied forces win the Battle of Marne.
  
• December 24, 1914 - Central forces bomb Dover, England.
  
• January 2, 1915 - Allied forces win the Battle of Sarikamis.
  
• May 7, 1915 - British liner Lusiatnia is sunk by German U-Boats, killing 128 American passengers.
  
• June 10, 1915 - The Girl Scouts is established.
  
• July 29, 1915 - American forces invade Haiti.
  
• February 21, 1916 - The Battle of Verdun begins.
  
• March 9, 1916 - Pancho Villa raids Columbus, New Mexico.
  
• March 15, 1916 - American forces drive Pancho Villa to Mexico.
  
• June 15, 1916 - The Boy Scouts is established.
  
• July 1, 1916 - The first Battle of Somme begins.
  
• August 4, 1916 - The United States purchases the West Indies and the Virgin Islands for $25 million.
  
• August 25, 1916 - The United States National Park Service is established.
  
• September 3, 1916 - Allied forces win the Battle of Verdun.
  
• November 18, 1916 - Allied forces win the first Battle of Somme.
  
• January 31, 1917 - Germany declared unrestricted submarine warfare against all ships.
  
• March 2, 1917 - Puerto Rico is made a United States territory.
  
• March 4, 1917 - Calvin Coolidge is sworn in as the 29th Vice President of the United States.
  
• March 5, 1917 - Woodrow Wilson is sworn in as President for a second term.
  
• April 6, 1917 - The United States enters World War I on the side of the Allies.
  
• August 5, 1917 - The United States National Guard is established.
  
• December 17, 1917 - The 18th Amendment is passed by Congress.
  
• March 3, 1918 - Russia pulls out of World War I.
  
• July 15, 1918 - The second Battle of the Marne begins.
  
• July 18, 1918 - Allied forces win the Battle of the Aisne-Marne.
  
• September 12, 1918 - The second Battle of Verdun begins.
  
• September 26, 1918 - The Battle of Miuse-Argonne begins.
  
• September 29, 1918 - Allied forces push Central forces past the Hindenburg Line.
  
• November 11, 1918 - The Allied and Central Powers sign an armistice, ending World War I.
  
• January 29, 1919 - The 18th Amendment is added to the Constitution.
  
• June 28, 1919 - The Treaty of Versailles is signed, ending World War I.
  

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