Sangam Period in South Indian History: Part III Megalithic burial sites in Tamilakam

The Prehistoric period mark the time when the first civilization or humans evolved. There are controversies on the time of origin of the Prehistoric period in India and the historians find it as a healthy point of discussion about the Prehistoric period. It is believed first civilization originated in between 200000 B.C. to 3500 - 2500 B.C. The Prehistoric era has been categorzied into six main periods and they include: 1. Stone age or Stone period; 2. Paleolithic age or Paleolithic age or Paleolithic period; 3. Mesolithic age or Mesolithic period; 4. Neolithic age or Neolithic period; 5. Bronze age or Bronze period; and 6. Iron age or Iron period.  Iron age in India is referred to as Megalithic age.