The defeat of the feudal crusaders in the Middle East was as inevitable as the defeat of the feudal lords in the struggle against the royal and city troops in England or in France (in the same era). In the West, the absolutist powers of the Catholic peoples won, and in the East – the same powers of the Islamic peoples. A special “Frankish” people did not develop in the principalities of the Crusaders due to their weak population and the cultural superiority of their neighbors – Greeks and Muslims.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.