<Tr> <Td> </Td> <Td> Established </Td> <Td> 240 CE </Td> </Tr> <Tr> <Td> </Td> <Td> Disestablished </Td> <Td> 605 CE </Td> </Tr> <Tr> <Td_colspan="2"> Area </Td> <Td> 3,500,000 km (1,400,000 sq mi) </Td> </Tr> <Tr> <Td_colspan="3"> <Table> <Tr> <Td> Preceded by </Td> <Td> Succeeded by </Td> </Tr> <Tr> <Td> <Table> <Tr> <Td> </Td> <Td> Mahameghavahana dynasty </Td> </Tr> <Tr> <Td> </Td> <Td> Kanva dynasty </Td> </Tr> <Tr> <Td> </Td> <Td> Kushan Empire </Td> </Tr> <Tr> <Td> </Td> <Td> Bharshiva dynasty </Td> </Tr> <Tr> <Td> </Td> <Td> Western Satraps </Td> </Tr> </Table> </Td> <Td> <Table> <Tr> <Td> Later Guptas </Td> <Td> </Td> </Tr> <Tr> <Td> Maukhari </Td> <Td> </Td> </Tr> <Tr> <Td> Maitraka </Td> <Td> </Td> </Tr> <Tr> <Td> Pushyabhuti </Td> <Td> </Td> </Tr> <Tr> <Td> Mathara dynasty </Td> <Td> </Td> </Tr> <Tr> <Td> Varman dynasty </Td> <Td> </Td> </Tr> <Tr> <Td> Kalachuris </Td> <Td> </Td> </Tr> </Table> </Td> </Tr> </Table> </Td> </Tr>

Why are guptas period known as classical age