i did an extensive independent reaseach on the rana rule of nepal during my Isc for a project to get admitted to a college. Rana's contribution to nepal cannot be forgotten with the Bir Hospital, Muluki Ain, and Administrative procedure modernization. However, with the creation of Feudal society - Kaji in the hills and chaudhari in the plains, (i guess you all know about feudal system), Ranas bilked enough wealth enough for many many generations (i can't even imagine how many). The way they did was, all the lands was owned by the landlords, and then there are workers, and all the production was taxed. The farmer worked for certain amount of production off the field (called Adya). the land lord in turn had to give certain amount (called lagaan) to the state. The government used some and whatever is left over went to the Prime Minister. For Lamjung and Kaski, everything went to the prime minister. For every man sent to the British Army, the PM got 1500 pounds per person. Over 15000 in WWI and over 45000 people were sent to the British Army in WWII. When Chandra Shamsher passed away.. his will for his 9 legitimate childred were 90 million rupees each. With 2% interest or inflation per annum over the last 70 years or so, it is equivalent to 3.5 billion rupees in current money. Now that is some wealth...