The Treaty of Sugauli (also spelled Sugowlee, Sagauli and Segqulee), the treaty that established the boundary line of Nepal, was signed on 4 March 1816 between the East India Company and Guru Gajraj Mishra following the Anglo-Nepalese War of 1814–16. Background Following the Unification of Nepal under Prithvi Narayan Shah, Nepal attempted to enlarge its domains, conquering much of Sikkim in the east and, in the west, the basins of Gandaki and Karnali and the Uttarakhand regions of Garhwal and Kumaon. This brought them in conflict with the British, who controlled directly or indirectly the north Indian plains between Delhi and Calcutta. A series of campaigns termed the Anglo-Nepalese War occurred in 1814–1816. In 1815 the British general Ochterlony evicted the Nepalese from Garhwal and Kumaon across the Kali River, ending their 12-year occupation, which is remembered for its brutality and repression. Octherlony offered peace terms to the Nepalese demanding British suzerainty in the form of a British resident and the delimitation of Nepal's territories corresponding roughly to its present-day boundaries. The Nepalese refusal to accede to the terms led to another campaign the following year, targeting the Kathmandu Valley, after which the Nepalese capitulated. Terms Historian John Whelpton writes: Ongoing disputes Among the border dispute of the Indo-Nepal boundary, the most significant are in the Susta and Kalapani regions. The two regions cover some 40 km of the Indo-Nepal border. See also 1950 Indo-Nepal Treaty of Peace and Friendship Gurkha War Kingdom of Nepal Naya Muluk - land in western Terai restored to Nepal in 1860 Prithvi Narayan Shah Sikkim Unification of Nepal References Bibliography External links Treaty Text and Related Documents Indian-Nepalese Border Treaties involving territorial changes Treaties of Nepal History of Uttarakhand Peace treaties of the United Kingdom 1816 treaties Treaties of the British East India Company Anglo-Nepalese War 1816 in Nepal