<Tr> <Td> Ecuador </Td> <Td> 1907 </Td> <Td> </Td> </Tr> <Tr> <Td> El Salvador </Td> <Td> 1874 </Td> <Td> </Td> </Tr> <Tr> <Td> Second French Empire </Td> <Td> 1864 </Td> <Td> Original signatory . </Td> </Tr> <Tr> <Td> German Empire </Td> <Td> 1906 </Td> <Td> </Td> </Tr>

When did the united states sign the geneva convention