How does this call for a crusade demonstrate the influence of the pope and the catholic cchurch?

The call for a crusade highlights the significant influence of the pope and the Catholic Church by showcasing the church's ability to mobilize large groups of people for a common religious cause. The pope's authority was seen as divinely sanctioned, allowing him to rally both nobility and commoners under the banner of faith to reclaim sacred lands. This not only reinforced the church's spiritual leadership but also solidified its political power, as participation in the crusade was framed as a holy obligation. Furthermore, the widespread response to such calls illustrated how deeply intertwined religion and societal duty were during this period.