<Tr> <Td> 1926--1945 </Td> <Td> Shōwa (Prewar) </Td> </Tr> <Tr> <Td> 1945--1952 </Td> <Td> Contemporary Japan </Td> <Td> Shōwa (Occupied Post-war) </Td> <Td> Post-war </Td> <Td> GHQ / SCAP </Td> </Tr> <Tr> <Td> 1952--1989 </Td> <Td> Shōwa (Post-occupation) </Td> <Td> Parliamentary democracy </Td> </Tr> <Tr> <Td> 1989--present </Td> <Td> Heisei </Td> </Tr>

What changes marked the end of japan’s middle ages