Question: when was the treaty of sugauli concluded and between whom
Answer: The Treaty of Sugauli ( also spelled Sugowlee , Sagauli and Segqulee ) , the treaty that established the boundary line of Nepal , was signed on 2 December 1815 and ratified by 4 March 1816 between the East India Company and King of Nepal following the Anglo - Nepalese War of 1814 - 16 .