That Reminds me when I was playing Medieval Total war II. I loved to go on crusades and Plunder everything on my path. That was one of the best way to make money in the game. After I plundered and killed and destroyed everything. I would sell the province to a random nation and move on to plunder the next one
My favorite way of making money was blasting the crap out of the mongols, asking for tribute to get peace, then having them attack you anyways and keep giving tribute for peace after you crushed them (every turn).
Didn't work with the Timurids though... stupid elephants