World War II wiped out many of the gains Japan had made since 1868. About 40% of the nation's industrial plants and infrastructure were destroyed, and production reverted to levels of about fifteen years earlier. The people were shocked by the devastation and swung into action. New factories were equipped with the best modern machines, giving Japan an initial competitive advantage over the victor states, who now had older factories. As Japan's second period of economic development began, millions of former soldiers joined a well-disciplined and highly educated work force to rebuild Japan. Japan's colonies were lost as a result of World War II, but since then the Japanese have extended their economic influence throughout Asia and beyond.

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