With the few exceptions, the great majority of Nepali people live in well defined, specific geographic regions. Nepal is divide into three regions which are Himalayan region, Hilly region, and Terai region. The Tibetan speaking Mongoloid people live in the high Himalayan region. It lies in the northern side with an alpine climate at the elevation of between 8848 m to 4800 m
The south of the Himalayas contains attractive mountain valleys. This region is mainly inhabited by Tibeto-Burman and Indo-Aryan peoples. Its latitude is between 3500 and 7000 feet above sea level. About 50 percent of the people live here and the climate is cool temperature to warm temperature. To the south is a stretch of land which consists of low river valleys and dense forest with various indigenous people which origin and affinities are quite obscure. Here, as the case in the high Himalaya, there are fewer inhabitable areas than in the middle ranges. The altitude of this region is 1000 to 2500 feet above sea level.
The fourth and most economically important geographical region is populated by various Indo-Aryan language speaking Mediterranean type people and some indigenous people like Tharus, Dhimal, Satar, Koche, Musahar, Meche and Dhangars. This region Is agriculturally most productive of all region. The climate of this region is tropical savanna with summer monsoon.
The people living near the north and south border have easy access to neighboring countries for trade and social intercourse. Likewise, the energetic middle hill people make some of the best soldiers in the world. They are from British, Indian and Nepal armies. A majority of the country’s administrative offices come from this region.
Being to the lack of communication between different groups or casts each remained in this traditional area, isolated from other groups. Every single group spoke a different language or dialect, developed its own marriage and social rules.
The art and culture from the medieval periods were confined and frozen for the century and a half. It was only after World War II, when the world situation had changed, that Nepal was able to unravel herself and open borders to establish relations with the outside world.