Japan's postwar economy developed from the remnants of its industrial infrastructure that was severely damaged during the Second World War. After World War II, Japan's economy fell into chaos and international economic relations were almost completely destroyed. Initially, imports were limited to basic foods and raw materials, most of which came from American economic assistance. Japan is extremely short of domestic materials. It was not until the Korean War (1950-53) that the US military's special procurement industry created conditions for Japan's prosperity and its exports began to recover. From 65438 to the end of the Allied Forces in 0952, Japan was an "underdeveloped country", and its per capita consumption was about one fifth of that of the United States. In the next two decades, Japan's average annual growth rate was 8%, making it the first country in the post-war era to change from an "underdeveloped" state to a "developed" state. The reasons for this situation include the high ratio of personal savings to private sector facilities investment, a labor force with good professional ethics, sufficient cheap oil supply, innovative technology and effective government support for private sector industries.