Yunnan  and Tibet, e.g. the  Gurung and  Magar  in the west,  Rai  and  Limbu  in the east (from Yunnan and north Burma via Assam), and  Sherpa  and  Bhutia  in the north (from Tibet). In the Terai, a part of the  Ganges   Basin  with 20% of the land, much of the