<Li> Northern and Southern dynasties </Li> <Tr> <Th> South Asia </Th> </Tr> <Tr> <Td> <Ul> <Li> Indus Valley </Li> <Li> Vedic period </Li> <Li> Kuru Kingdom </Li> <Li> Mahajanapada </Li> <Li> Magadha Kingdom </Li> <Li> Nanda Empire </Li> <Li> Maurya Empire </Li> <Li> Satavahana </Li> <Li> Indo - Greek Kingdom </Li> <Li> Indo - Scythian Kingdom </Li> <Li> Early Cholas </Li> <Li> Kushan Empire </Li> <Li> Vakataka </Li> <Li> Pallava </Li> <Li> Gupta Empire </Li> </Ul> </Td> </Tr> <Ul> <Li> Indus Valley </Li> <Li> Vedic period </Li> <Li> Kuru Kingdom </Li> <Li> Mahajanapada </Li> <Li> Magadha Kingdom </Li> <Li> Nanda Empire </Li> <Li> Maurya Empire </Li> <Li> Satavahana </Li> <Li> Indo - Greek Kingdom </Li> <Li> Indo - Scythian Kingdom </Li> <Li> Early Cholas </Li> <Li> Kushan Empire </Li> <Li> Vakataka </Li> <Li> Pallava </Li> <Li> Gupta Empire </Li> </Ul>

When did the nok civilization reach its peak