<Tr> <Td> </Td> <Td> Qing dynasty </Td> </Tr> <Table> <Tr> <Td> North Vietnam </Td> <Td> </Td> </Tr> <Tr> <Td> Provisional Central Government of Vietnam </Td> <Td> </Td> </Tr> <Tr> <Td> Kingdom of Cambodia (1953--70) </Td> <Td> </Td> </Tr> <Tr> <Td> Kingdom of Laos </Td> <Td> </Td> </Tr> <Tr> <Td> Republic of China (1912--49) </Td> <Td> </Td> </Tr> </Table> <Tr> <Td> North Vietnam </Td> <Td> </Td> </Tr> <Tr> <Td> Provisional Central Government of Vietnam </Td> <Td> </Td> </Tr>

When did vietnam become a part of the french empire