<Tr> <Td> </Td> <Td> Final East West divide </Td> <Td> 395 </Td> </Tr> <Tr> <Td> </Td> <Td> Fall of Western Empire </Td> <Td> 476 </Td> </Tr> <Tr> <Td> </Td> <Td> Fourth Crusade </Td> <Td> 1202--1204 </Td> </Tr> <Tr> <Td> </Td> <Td> Fall of Constantinople </Td> <Td> 29 May 1453 </Td> </Tr>

What factors led to the roman empires growth