Rana Administration

Factionalism among the royal family led to a period of instability after the war. In 1846, Queen Rajendralakshmi plotted to overthrow Jang Bahadur, a fast-rising military leader of Indian Rajput ancestry, who was presenting a threat to her power. The plot was uncovered and the queen had several hundred princes and chieftains executed after an armed clash between military personnel and administrators loyal to the queen. This came to be known as the Kot Massacre. However, Bahadur emerged victorious eventually and founded the Rana dynasty; the monarch was made a titular figure, and the post of Prime Minister was made powerful and hereditary, held by a Rana.

The Rana regime, a tightly centralized autocracy, pursued a policy of isolating Nepal from external influences. This policy helped Nepal maintain its national independence during the British colonial era, but it also impeded the country's economic development and modernisation. The Ranas were staunchly pro-British and assisted the British during the Indian Rebellion of 1857, and later in both World Wars.