North-east India in the Ninewteenth century
The concept of India's north-east as a single regional entity is of recent origin. Historically, it has been recognised more as a unity in terms of its geology or geography. As an administrative formation in the preindependence era, it largely meant the states of Assam, Manipur and Tripura; most hill tracts then were part of Assam. Today, this region, east of Bangladesh includes seven states: Assam, Arunachal Pradesh, Manipur, Meghalaya, Mizoram, Nagaland and Tripura. It covers an area 98000 sq. miles, and population around 26 million.