In the late eighteenth century, the expansion of the Shah dynasty from the hill principality of Gurkha into a large and very diverse nation-state in the central Himalayas with its capital at Kathmandu was the decisive factor in the political development of Nepal. The Shah family rarely exercised effective authority over the many small principalities, Kathmandu-based aristocratic families, and tribal ethnic elites in the hill areas, but there was a central system of government in which the various factions could negotiate and interact. But by 1850 one aristocratic family, the Ranas, emerged as the dominant power in Nepal through.....