Discover the history of World War I and II with key facts on leaders, battles, and alliances. Learn about the League of Nations and the United Nations, formed to maintain peace post-war. Dive into the Axis Powers led by figures like Hitler and Mussolini. Explore the major battles such as Battle of Stalingrad and leaders like Churchill. Uncover the causes of the Great Depression and the aftermath of both wars on Germany. Find out how the United States entered WWII and the significance of …