Answer:
1. Family feud In the life time of Janga Bahadur Rana, attempts were made to oust him from the power. But all such attempts were in vain. After his death in 1938, the sons of his brothers terminated his sons and made a new order of succession that ultimately made the sons of Dhir Shamsher the most powerful ones
2. As a result, the exiled 'C' class Ranas went against the Rana rule, supported anti Rana movements and helped to bring the Rana rule to an end. Anti-Rana Movements: During the time of Jung Bahadur itself the protest against the autocratic rule began
3.The King delegated all his powers and authorities to Jungbahadur. The Rana Prime Ministers ruled over Nepal for 104 years as the dictators enjoying unlimited powers and authorities.
Step-by-step explanation:
( i will come back and edit with a 3d answer hang tight)
there 3 causes.