<Tr> <Td> Jōmon </Td> <Td> 14,000--300 BC </Td> </Tr> <Tr> <Td> Yayoi </Td> <Td> 300 BC--300 AD </Td> </Tr> <Tr> <Td> Kofun </Td> <Td> 300--538 </Td> </Tr> <Tr> <Td> Asuka </Td> <Td> 538--710 </Td> </Tr>

Who gained more from their membership in the allied powers of ww1 china or japan