Explanation:

In 1791, the Gorkhas of Nepal while expanding their kingdom westwards across Kali River, invaded and overran Almora. In the meantime, the British were engaged in preventing the Gorkhas from over-running the whole of the northern frontier. The Gorkha rule lasted for twenty-four years. Due to their repeated intrusion into British territories in the Terai from 1800 onwards, Lord Moira, the Governor-General of India, decided to attack Almora in December 1814, marking the beginning of the Anglo-Gorkha war. The war that broke out in 1814, resulted in the defeat of the Gorkhas and subsequently led to the signing of the Treaty of Sugauli in 1816.