Ngalops

The Ngalop (a term thought to mean the earliest risen or first converted) are people of Tibetan origin who migrated to Bhutan as early as the ninth century. For this reason, they are often referred to in foreign literature as Bhote (people of Bhotia or Tibet). The Ngalop are concentrated in western and northern districts. They introduced Tibetan culture and Buddhism to Bhutan and comprised the dominant political and cultural element in modern Bhutan.

Sharchops

The Sharchop (the word means easterner), an Indo-Mongoloid people who are thought to have migrated from Assam or possibly Burma during the past millennium, comprise most of the population of eastern Bhutan. Although long the biggest ethnic group in Bhutan, the Sharchop have been largely assimilated into the Tibetan-Ngalop culture. Because of their proximity to India, some speak Assamese or Hindi. They practice slash-and-burn and tsheri agriculture, planting dry rice crops for three or four years until the soil is exhausted and then moving on.

Aborginals

The third group consists of small aboriginal or indigenous tribal people living in scattered villages throughout Bhutan. Culturally and linguistically part of the populations of West Bengal or Assam, they embrace the Hindu system of endogamous groups ranked by hierarchy and practice wet-rice and dry-rice agriculture. They include the Drokpa, Lepcha, and Doya tribes as well as the descendants of slaves who were brought to Bhutan from similar tribal areas in India. The ex-slave communities tended to be near traditional population centers because it was there that they had been pressed into service to the state. Together, the Ngalop, Sharchop, and tribal groups are thought to constitute up to 72 percent of the population.

Lhotsampas

The Lhotsampas are the people of the Nepalese origin which comprises of the remaining 28 percent of the population. The first small groups of Nepalese, the most recent major groups to arrive in Bhutan, emigrated primarily from eastern Nepal under Indian auspices in the late nineteenth and early twentieth centuries. Mostly Hindus, the Nepalese settled in the southern foothills and are sometimes referred to as southern Bhutanese. Traditionally, they have been involved mostly in sedentary agriculture, although some have cleared forest cover and conducted tsheri agriculture.