What factors led to the start of the crusade?

The Pope may have had a number of religious reasons to call this crusade. The most likely religious reason for the First Crusade was Urban's desire to establish peace in Western Europe. This whole concept may seem odd, since the Crusades were, essentially, a call to arms

nope.

explanation:

well the fact it is basically a peninsula allowed trade to come from many places, thus allowing cultural diffusion to take place. india has seasonal monsoons that merchants travel back and forth from india using the monsoons wind patterns