About our past, Meghalaya

Sometime I look in nat geo channel about prehistory era and ancient Roman, Greek and other civilization, they all had a history which goes back a long way in time, but I wonder where is our. We have a lot of folk tales talking about our past and I'm sure we are the invisible hill tribes of the northeast, that is why we are made our home in Meghalaya which is Scotland of the East in India, a land fill with milk and honey like no other place in north east of India, an abode of clouds. We are rich with natural resource, and sure we have fought battles to have this land as our home when we were nomads. As history goes every beautiful land will be a land to envy, so it will be no surprise to know that we have fought a lot of battles in the time long gone ago but yes, what we need a scientific study to know from where did we come and what route did we take to reach here. Was there any other settlers before us! Yes, we have no castles or historic remains much to study of where our forefathers came from and there is no written documents as the dead and their belongs were burn with them before christianity spread in the state. I'm sure with science, we can get to learn a lot about the generation before us.