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Assassination of Archduke Francis Ferdinand
when he was assassinated it eventually led to the outbreak of the First World War -
Wilson Urges Neutrality
President Woodrow Wilson formally proclaims the neutrality of the United States, a position that a vast majority of Americans favored -
Sinking of the Lusitania
A German submarine (U-boat) U-20 torpedoed and sank the Lusitania, a swift-moving British cruise liner traveling from New York to Liverpool, England -
American Troops Enter Europe
when the 1st Division fired the first American shell of the war toward German lines, although they participated only on a small scale -
Zimmerman Note
coded telegram sent by German foreign secretary Arthur Zimmermann to the German minister in Mexico -
America Declares War
Wilson then asked Congress for "a war to end all wars" that would "make the world safe for democracy", and Congress voted to declare war on Germany -
Espionage Act
it prohibited obtaining information, recording pictures, or copying descriptions of any information relating to the national defense -
Wilson’s 14 Points
President Woodrow Wilson proposed a 14-point program for world peace -
Second Battle of Marne
The Second Battle of the Marne was the last major German offensive on the Western Front during the First World War -
Paris Peace Conference
The Paris Peace Conference was the international meeting that established the terms of peace after World War I -
Rejection of the Treaty of Versailles
the Senate rejected the Treaty of Versailles, which formally ended World War I, in part because President Woodrow Wilson had failed to take senators' objections to the agreement into consideration. -
Creation of the CPI
CPI established to mobilize public opinion behind World War I -
German Surrender in Compiegne, France
although tacit support was given to the pro-German West Russian Volunteer Army under the guise of combating the Bolsheviks. -
Selective Service Act
It was the first peacetime conscription in United States history.