In World War II, the Allied Powers—led by the United States, the United Kingdom, the Soviet Union, and China—fought against the Axis Powers, primarily Nazi Germany, Fascist Italy, and Imperial Japan. The Allies aimed to stop Axis expansion, restore peace, and dismantle totalitarian regimes.
Key victories at Stalingrad, D-Day, and Midway turned the tide. The Axis powers sought territorial dominance and imposed brutal rule over conquered regions. The Allies eventually defeated the Axis in 1945, leading to post-war reconstruction and the creation of the United Nations.