Contemporary society, irrespective of the levels of development, is surely a rapidly changing society. Such changes have been observed in a variety of directions. In a developing country like India, one can notice such changes occurring in society at various historical periods producing diverse consequences. One of the catching points in this context is that the forces and factors those are considered to be responsible were identified in numerous ways which vary from one geographical region to another and from one socio-historical setting to another. This is very much applicable in a society like India because Indian society in general and the society of northeastern region, in particular, have witnessed such events and historical sequences since ancient period. Historians, social analysts, and scholars who have taken interest in characterizing northeastern region and its society was seen to agree to conceptualize that it is a land of contrasts.