Final answer:
In Crusader-won territories, Muslims were permitted to practice Islam and maintain certain rights, unlike the more restrictive courtesies extended by Muslims to non-Muslims under Islamic rule, which included the dhimmi system granting legal, yet restricted, religious freedoms for tax-paying non-Muslims.
Step-by-step explanation:
In Crusader-won territories, Muslims were often granted courtesies that were not typically reciprocated in Muslim lands due to Islamic law. For instance, Iberian Muslims under Christian rule were allowed to practice Islam and were not expelled. Their less stringent form of Islamic law from pre-Almohad days was reinstated. They also retained certain rights, such as not having their wealth confiscated, and were able to work within Christian businesses except in Christian households. An important mechanism of tolerance was the dhimmi system, which provided religious minorities in Muslim lands with legal protection but also imposed certain restrictions. Over time, as long as non-Muslims paid their taxes and acknowledged the sovereignty of Muslim leadership, they could practice their religion with some degree of freedom. This was a stark contrast to the policies of the Christians during the Crusades, who, while initially violent, came to tolerate and protect native communities due to practical considerations such as the need for workers and trade.