While people give much credence to the names of kings mentioned in Tamil Sangam literature, the same attention has not been paid to the geographical description found therein.
Lets us take the description of the Five Divisions of Land according to Tholkappiyama nd other Grammatical works.
The land mass here the Tamils lived as divided and named into Five distinct geographical entities.
One can n find these five regions is the present Tamil Nadu as it is to-day.
The present conception of Lemuria or Kumari Kandam might explain this phenomena.