-
Period: to
USA's Entry into WWI
-
February 1, 1917
Germany resumed unrestricted submarine warfare, which targeted military and civilian ships. -
March 1, 1917
The Zimmermann Telegram was made public, revealing Germany's proposal to Mexico to join the war against the United States. -
April 6, 1917
The United States officially declared war on Germany, entering World War I on the side of the Allied Powers. -
Period: to
Key Events from 1917-1918
-
November 2, 1917
The Balfour Declaration was issued, indicating British support for the establishment of a Jewish homeland in Palestine. -
November 7, 1917
The Bolsheviks, led by Lenin, seized power in Russia, leading to the October Revolution. -
December 15, 1917
Russia signed an armistice with Germany, halting hostilities on the Eastern Front. -
Period: to
The Armistice (End of WWI)
-
November 9, 1918
Kaiser Wilhelm II of Germany abdicated and fled to the Netherlands. -
November 10, 1918
Emperor Karl of Austria abdicated, marking the end of the Austro-Hungarian Empire. -
November 11, 1918
The Armistice was signed at 11 a.m., officially ending World War I. The agreement was signed in a railway car in the Compiègne Forest, France. -
Period: to
Key Events from 1918-1919
-
December 1, 1918
Yugoslavia was proclaimed an independent state, forming the Kingdom of Serbs, Croats, and Slovenes. -
January 18, 1919
The Paris Peace Conference began, setting the stage for the Treaty of Versailles. -
June 28, 1919
The Treaty of Versailles was signed, officially ending the state of war between Germany and the Allied Powers. -
Period: to
Key Events from 1919-1921
-
July 10, 1919
President Wilson submitted the Treaty of Versailles to the U.S. Senate for ratification. -
November 19, 1919
The U.S. Senate failed to ratify the Treaty of Versailles, marking a significant moment in post-war U.S. foreign policy. -
August 10, 1920
The Treaty of Sèvres was signed, marking the end of hostilities with the Ottoman Empire and leading to the division of Ottoman territories.