<Tr> <Td> Early 19th - century England </Td> <Td> 40 </Td> <Td> </Td> </Tr> <Tr> <Td> 1900 world average </Td> <Td> 31 </Td> <Td> </Td> </Tr> <Tr> <Td> 1950 world average </Td> <Td> 48 </Td> <Td> </Td> </Tr> <Tr> <Td> 2014 world average </Td> <Td> 71.5 </Td> <Td> </Td> </Tr>

What was the average life expectancy in ancient rome