many things happened after world war 1 there was a lot of chaos The fighting in World War I ended in western Europe when the Armistice took effect at 11:00 am GMT on November 11, 1918, and in eastern Europe by the early 1920s. During and in the aftermath of the war the political, cultural, and social order was drastically changed in Europe, Asia and Africa, even outside the areas directly involved in the war. New countries were formed, old ones were abolished, international organizations were established, and many new and old ideologies took a firm hold in people's minds.