After World War II, several countries were occupied by Allied forces to ensure stability and prevent future conflicts. Notably, Germany and Japan were divided into zones controlled by the United States, United Kingdom, France, and Soviet Union. This occupation aimed to demilitarize these nations, promote democracy, and rebuild their economies. During this period, the occupying powers implemented various reforms, including political restructuring and economic assistance. In Germany, the Marshall Plan helped revive the economy, while in Japan, significant changes were made to its constitution, promoting democratic governance. These efforts laid the groundwork for lasting peace and cooperation in the post-war era.