<Tr> <Td> Birth </Td> <Td> 1 ft 8 in (0.51 m) </Td> <Td> 8 lb 6 oz (3.8 kg) </Td> <Td> Normal height and weight </Td> <Td> Average </Td> <Td> February 22, 1918 </Td> </Tr> <Tr> <Td> 6 Months </Td> <Td> 2 ft 10.5 in (0.88 m) </Td> <Td> 30 lb (14 kg) </Td> <Td> </Td> <Td> 2 year old </Td> <Td> August 22, 1918 </Td> </Tr> <Tr> <Td> 1 Year </Td> <Td> 3 ft 6 in (1.07 m) </Td> <Td> 45 lb (20 kg) </Td> <Td> When he began to walk at 11 months, he was 3 ft 3.5 in (1.00 m) tall and weighed 40 lbs . </Td> <Td> 5 year old </Td> <Td> February 22, 1919 </Td> </Tr> <Tr> <Td> 18 Months </Td> <Td> 4 ft 3 in (1.30 m) </Td> <Td> 67 lb (30 kg) </Td> <Td> </Td> <Td> 8 year old </Td> <Td> August 22, 1919 </Td> </Tr>

Who is the tallest person and how did they get so tall