<Tr> <Td> Transitional period </Td> <Td> (1232--1505) </Td> </Tr> <Tr> <Td> Crisis of the Sixteenth Century </Td> <Td> (1505--1594) </Td> </Tr> <Tr> <Td> Kandyan period </Td> <Td> (1594--1815) </Td> </Tr> <Tr> <Td> British Ceylon </Td> <Td> (1815--1948) </Td> </Tr>

Who were considered to be the most prominent rulers of chola dynasty and why