Answer :
The political condition of Nepal was unstable after the treaty of Sugauli due to following reasons:
- The weak nature of the king.,
- The clash among the queens.,
- The interference of Britishers to interfere in political issues of Nepal.,
- The situation changes the Prime Minister very Frequently.,
- Generation rivalry between Pandey and Thapa.&
- There was also a dispute between the royal family as they supported different leagues.
The Treaty of Sugauli (also spelled Sugowlee, Sagauli, and Segqulee), the treaty establishing the border of Nepal, was signed on 4 March 1816 between the East India Company and Guru Gajaraj Mishra after the Anglo-Nepalese War 1814 -16.
Following the unification of Nepal under Prithvi Narayan Shah, Nepal attempted to expand its territory, conquering much of Sikkim in the east and west, the Gandaki and Karnali basins, and areas from Uttarakhand from Garhwal and Kumaon.
This brought them into conflict with the British, who directly or indirectly controlled the northern Indian plains between Delhi and Calcutta. A series of campaigns known as the Anglo-Nepalese War took place from 1814-1816. In 1815, British General Ochterlony expelled the Nepalese from Garhwal and Kumaon across the Kali River, ending their 12-year occupation, remembered for its brutality and repression.
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