The Land of Seven Sisters: NORTH EAST INDIA Northeast of India the mystic region, is the most bio - diverse regions of the world. Comprising of seven small states located in the far Northeastern portion of the vast Indian subcontinent, this region is flanked by hills while the mighty Brahmputra River along with its tributaries cut across. The seven states are Assam, Arunachal, Nagaland, Manipur, Mizoram, Tripura and Meghalaya.