Answer: Sugauli Sandhi was the agreement to end the war between Nepal and East India Company. Nepal has to lose her almost half of her territory due to this treaty held on December 2, 1815AD.
Explanation: National integrity of Nepal was lost and unification campaign was stopped and conspiracy in politics was started in durbar. After the treaty, the time until 1903 BS was the time of political instability in Nepal.
The following are the reasons for the political instability at that time in Nepal:-
1. the situation to change the Prime Minister frequently
2. the clash among the queens
3. the nature of British to interfere in the politics of Nepal
4. Generational rivalry between Pandey and Thapa