Why were the crusades fought in christian view?

The Crusades were fought from the Christian perspective primarily to reclaim the Holy Land, particularly Jerusalem, from Muslim control. They were seen as a religious duty to protect and spread Christianity, with the belief that participating in these wars could grant spiritual rewards, including forgiveness of sins. Additionally, the Crusades aimed to unite Christians across different regions against a common enemy, fostering a sense of shared purpose and identity among European Christians.