post-occupation japan means japan after its occupation and control by a group of nations had ended. this is the period after the second world war. the second world war had damaged japan very badly. it has almost lost its industry and economy was in a very bad shape. after the war, japan received assistance and technology from the us and several other countries of europe. the progress was very rapid. for about 30 years, from around the 1950s to the 1980s, japan grew very fast. it became one of the major economic powers of the world.