<Ul> <Li> Southeast Asia </Li> <Li> West Asia </Li> </Ul> <Ul> <Li> Europe </Li> </Ul> <Tr> <Th> Postclassical </Th> </Tr> <Tr> <Td> <Ul> <Li> Africa </Li> <Li> Americas </Li> </Ul> <Ul> <Li> Oceania </Li> <Li> East Asia </Li> </Ul> <Ul> <Li> South Asia </Li> </Ul> <Ul> <Li> Southeast Asia </Li> <Li> West Asia </Li> </Ul> <Ul> <Li> Europe </Li> </Ul> </Td> </Tr>

Who is considered by many historians today to be the greatest historian of the ancient world