being the "dominant element in the tribes living in  Assam  and the  Indo-Burmese  frontiers...  Sikkim ,  Mizoram ,  Bhutan ,  Nepal ,  Bangladesh ... [and]  Tibetan  mongoloids". [ 15 ] In 1900, Joseph Deniker said, the "Mongol race admits two varieties or subraces: Tunguse or Northern Mongolian... and Southern Mongolian". [