History
The eastern hills are the land of the Kirat, the forebears of today's Rai and Limbu, whom Nepali tradition regards as among the country's earliest inhabitants. The Limbu country east of the Arun river, called Limbuwan, was ruled by its own chiefs until a war and a treaty with Prithvi Narayan Shah joined it to the Gorkha kingdom in 1774. The Shah state granted the Limbu a form of land autonomy, kipat, which survived in parts into the 20th century.
Sherpa families migrated over the passes from eastern Tibet several centuries ago and settled the high valleys of the Khumbu and Solu, trading with Tibet across the Nangpa La. Their world changed in the 1950s, when foreign mountaineers began to arrive. Tenzing Norgay and Edmund Hillary reached the summit of Everest in 1953, and Hillary went on to found the Himalayan Trust, which built schools and clinics in the Khumbu and the airstrip at Lukla in 1964.
The Terai to the south was a malarial forest until the 20th century. Biratnagar grew as an industrial town, and its jute-mill strike of 1947, led by the Koirala brothers, was an early challenge to Rana rule. From the 1990s more than 100,000 Lhotshampa refugees from Bhutan lived in camps in eastern Nepal, most of them until resettlement abroad. Under the 2015 constitution the east became Province No. 1, renamed Koshi Province in 2023.
