The Nepalese economy is based upon 90 % on agriculture. The industry produces mostly beverages, cigarettes and processed food. Clothing is connected to agriculture. The main exports are carpets, handicrafts and tourism plays an important role for Nepal. So the social structure is still based somehow in the old days, supported by the Hindu cast system, which divides all tribes into own categories.
Of course, mostly Brahmins have economical and political power, only few other have bigger influence, as in the tourism, Manangi, Sherpa does. Politically Nepal is not stable, as democracy is shortly introduced, so governments change often, which is a dangerous problem for the long term future development of the country. Nevertheless, for tourists this means in no way a danger, as the Nepalese do not extend their quarrels to “outsiders”.