The political borders have become very rigid in this century. Languages, attire, food, spiritual and religious beliefs,means of making both ends meets,geography, weather dont change suddenly after a political boundary line. They show a gradual pattern. Such kind of diversity pattern is inherent to nature. Most people fail appreciate this fact. It is possible that large countries face this diversity problem more. Behind every political cause, there are a lot many genuine people and a lot many with selfish interests. Before making a comment on it, we should make sure that we are able to at least appreciate the genuine part of it. I will tell a example - A priest in Chennai Temple told me that a Tamil King ruled entire east- upto Indonesia and spread vedas there. A priest in Hindu temple of Indonesia told me that Vedas were written there, and people of Java had no intension of having political control of India but of only spreading Vedas. He said, in the process, Indians took off vedas, upnishadas, sanskrit from them and claim to be their own. You will find many arguments and evidences on both sides. There are extreme views in this world, our view should be balanced. The moment we say "people of northeast are different", it makes "dil tod diya" case. Mentioning that their race is different is a factual statement. These two races have lived together peacefully for thousands of years. I too am in favor of that.