 
 <prompt> Wetin be di kain financial wahala wey make nobles easy to control? Based on di question wey dey before dis one, write one context wey get di answer. E fit be 1 - 20 sentences. Context: <response>: One of John main wahala na to get plenti money wey e need for im campaigns to reclaim Normandy. The Angevin kings get three main sources of income wey dey available to dem, wey be revenue from their personal lands, money wey dem raise through their rights as feudal lord, and revenue from taxation. Revenue from royal demesne no dey flexible and e don dey reduce small small since the Norman conquest. Matters no dey help as Richard sell many royal properties for 1189, and taxation no dey play big role for royal income like for later centuries. English kings get plenty feudal rights wey dem fit use to generate income, including the scutage system, wey be say feudal military service fit dey avoid by paying cash to the king. E dey get income from fines, court fees and the sale of charters and other privileges. John dey try well well to maximize all possible sources of income, reach the extent wey dem don describe am as "avaricious, miserly, extortionate and moneyminded". John also dey use revenue generation as a way to control the barons politically: debts wey dey owed to the crown by the king's favoured supporters fit dey forgiven; collection of debts owed by enemies dey enforced strictly. 