Occupation zones refer to the regions of Germany that were divided and controlled by the Allied powers after World War II, primarily established during the Potsdam Conference in 1945. This division was meant to manage the post-war reconstruction and to prevent any resurgence of German militarism. Each zone was administered by one of the major Allied powers: the United States, the United Kingdom, France, and the Soviet Union, leading to significant political, economic, and social ramifications in the years that followed.