Your knowledge of history is wonderful ! But still like all primary school history teachers you have merely restated the obvious. History is History. While it can give some directions it cannot be a solution to how we conduct ourselves today. If the world were to use historical references to redraw national boundaries we would have global choas along with global warming threatening mankind. Using history we could reclaim for India most of Pakistan and what is today called afghanisation. Using history Tamilnadu could make logical claims on large parts of Bali , Cambodia etc. The problem with the Mc Mohan Line was that Henry McMohon drew it not only unilaterally but also on a two- dimesional map without caring to even know the terrain. Result : There are little or no natural elements to firmly identify the line on actaul ground zero. Even streams identified by the line change course seasonally. Reality is that China and India are two giants in Asia . One of them has to emerge at the big brother and the other logically the smaller brother. Border disputes , China's moving closer to Pakistan , India's moving slowly into the US Camp are all posturing in this conflict for supremacy. The solution lies in working out the problems . But be assured that a solution doesnot lie in going back to historical elements during the reign of Chandra Gupta Maurya !