Answer:
1917- American troops arrive in Europe. 1 June 1918- The Germans are prevented from continuing to Paris by American and French troops at Château-Thierry.
September 1918- American troops push back the Germans again at Saint-Mihiel
26 September 1918- Americans launch a massive offensive near the Argonne Forest and fell back.
October 1918- Political revolution in Austria-Hungary resulted in independence for Poland, Hungary, and Czechoslovakia.
October 1918- German sailors mutiny in Kiel.
November 1918- Both the Austro-Hungarian and Ottoman Empires surrender.
November 1918- German emperor steps down and Germany becomes a republic.
11 November 1918- Armistice Day. The Germans and Allies agree to stop fighting.
January 1919- Countries send delegates to Versailles to create a peace treaty and formally end the war.
