Gorkha Expansion campaign 1st

From 1736, the Gorkhalis engaged in a campaign of expansion begun by King Nara Bhupal Shah, which was continued by his son, King Prithvi Narayan Shah and grandson Prince Bahadur Shah. Over the years, they conquered huge tracts of land to the east and west of Gorkha.[5][6]

Among their conquests, the most important and valuable acquisition was the wealthy Newar confederacy of Nepal Mandala centered in the Kathmandu Valley. Starting in 1745, the Gorkhalis mounted a blockade in a bid to starve the population into submission, but the inhabitants held out.

The Newars appealed to the British East India Company to help, and in 1767, it sent an expedition under Captain Kinloch which ended in failure.[7] The three Newar capitals of Kathmandu, Lalitpur and Bhaktapur fell to the Gorkhalis between 1768 and 1769. The Gorkhali king subsequently moved his capital to Kathmandu.[8]