How did World War I end, and what impact did the conclusion of this war have on the rest of the world?

World War I ended rather suddenly, with hostilities officially ending on November 11, 1918 at 11:00 a.m., though the Central Powers of Austria-Hungary and Bulgaria signed armistices with the Allies a few weeks prior to this. The official treaty that ended the war was not signed until 1919, as Germany had to accept war guilt and pay reparations in the Versailles Treaty. The war ended with the abdication of the German Kaiser Wilhelm II amid threats of leftist revolution at home. The German people could not believe that the war ended, since the government-controlled press had convinced them that the war was going well; in reality, the German army was retreating through France when the peace deal was struck. German soldiers and civilians alike were starving due to the British blockade of Germany and two bad harvests. Even between November 1918 and the ratification of the Versailles Treaty, Britain did not lift its blockade, and Germans continued to starve. Germany was never invaded, and this allowed Adolf Hitler to claim that communists and Jews sold out the German army while it was in the field.
The sudden end of the war had far-reaching implications. Woodrow Wilson had an idea for the League of Nations but he was not yet clear on what its role would be in world security. This would lead to debate in Europe and in the United States on the league and would ultimately end with the United States not joining the international body. Millions of Europeans clamored for their own nations as the Russian, German, Austro-Hungarian, and Ottoman Empires collapsed. This would lead to the formation of Yugoslavia, Estonia, Latvia, Lithuania, Finland, Czechoslovakia, Poland, and the independent nations of Austria and Hungary. Britain and France got mandates from divided German territory. While these places were supposed to be prepared for self-government in the future, the victorious nations ruled them similarly to how they had ruled their own colonies. Germany would use the sudden end of the war as incentive to get back at the Allied Powers, especially France, twenty years later. Germany would initially claim that it was only redressing the issues caused by the Versailles Treaty when it split German-speaking people in Austria and Czechoslovakia away from their mother countries. Germany would later sign a non-aggression pact with the Soviet Union—another nation that was treated unfairly at the Versailles Conference—in which Germany and the Soviet Union agreed to split Poland. This was the spark that began World War II in Europe.