After the Anglo-Nepalese War of 1814–1816, Nepal had generally maintained a peaceful stance with the East-India company. The friendship between the two countries reached its pinnacle during the reign of Jang Bahadur Rana. During the Sepoy Mutiny of 1857, Nepal also involved itself in favour of the East India Company. After the Sepoy Mutiny, some areas of the Terai region that comprises today's Banke, Bardiya District, Kailali, and Kanchanpur districts of western terai collectively known as "Naya Mulok" ("New Country") were returned to Nepal. Nepal also helped the British in the First World War. The relation between Nepal and Britain was generally good both before and after the treaty.