Why North East & Kashmir rebel

One is at extreme North, other is at extreme north east, both places are extremely blessed by the nature. Both has some similarities, like both are connected by a thin line of land to the main land of India. Both are still to explore completely, main land people still miss understood about their socio-cultural background etc.Most common thing is that both has a prolonged history of blood shedding history of rebel. Natural death is the most unnatural thing in both places.
It is an common notion that the terrorism in Kashmir is totally different from the terrorism in north east, but that is not true. The history and nature of terrorism in both places are mostly same.
In North East rebel started in early sixties with the rebel of Naga Hills. They refused to stay with the newly formed India. It was not an immediate result of any regional politics, it was a result of prolonged negligence. This particular piece of land is still an unknown corner for a lots of Indians. Same thing happens with kashmir valley.
If we see the sociological and political history of both places, it is prominent that most of these places are either autonomous or a free state before 1947.
In both places the terrorism is an tissue culture which turned into cancer. And they are supported by some other external power to rip the benefit of internal conflict.