Final answer:
Saladin's conquest of Jerusalem in 1187 differed from the crusaders' conquest in 1099 as he avoided mass murder and did not destroy or close the Roman Catholic churches. He allowed Christians to continue practicing their religion.
Step-by-step explanation:
The conquest of Jerusalem by Saladin in 1187 differed from the crusaders' conquest in 1099 in several ways. One key difference is that Saladin avoided mass murder of the Roman Catholics living in Jerusalem, unlike the crusaders who engaged in a horrific slaughter of the Muslim and Jewish inhabitants. Saladin did not burn down all the Roman Catholics' important churches or exile all Christians from Jerusalem and close all the churches. Instead, he allowed Christians to continue practicing their religion and did not destroy the churches. It is also not reported that Saladin took all the valuables from the Roman Catholic churches for himself.