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        Archduke Franz Ferdinand and his wife Sophie are shot to death by a Bosnian Serb during an official visit to the Bosnian capital of Sarajevo. - 
  
  
        As WWI erupts in Europe, President Woodrow Wilson formally proclaims the neutrality of the United States, a position that a vast majority of Americans favored. - 
  
  
        A German U-boat attacked the British-owned steamship Lusitania, killing 1,195 people including 128 Americans - 
  
  
        CPI was established to mobilize public opinion behind World War I - 
  
  
        They entered Europe in June and a majority of troops were sent overseas by ships. - 
  
  
        It proposed that a military alliance between Germany and Mexico if the United States entered World War I against Germany. - 
  
  
        The American entry into World War I came after a year long effort by President Woodrow Wilson to get the United States into the war. - 
  
  
        prohibited obtaining information, recording pictures, or copying descriptions of any information relating to the national defense that may be used for the injury of the United States or to the advantage of any foreign nation - 
  
  
        The act authorized the Federal Government to temporarily expand the military through conscription. The act eventually required all men between the ages of 21 to 45 to register for military service. - 
  
  
        Wilson introduced a 14-point program for world peace that were later taken as the basis for peace negotiations at the end of the war. - 
  
  
        The battle started near the Marne River in the Champagne region of France. The Germans begin their final offensive push of World War I. The conflict ended several days later in a major victory for the Allies. - 
  
  
        A meeting of the Allies after the end of WWI to set the peace terms for the defeated Central Powers. - 
  
  
        The Senate rejected the Treaty of Versailles that stated Germany pay financial reparations, disarm, lose territory, and give up all of its overseas colonies. The rejection finally ended WWI. - 
  
  
        Compiegne was the site Armistice ending World War I with Germany's surrender.