You can shorten all of these by the way!
CAUSES
1. If it were a worthy thing to make a pilgrimage to the Holy Sepulchre, much more would it be a spiritual act to rescue the sacred spot from the violation of infidels. This was the belief that changed the pilgrim into a warrior, this was the sentiment that for two centuries and more stirred the Christian world to its profoundest depths, and cast the population of Europe in wave after wave upon Asia. "Deus vult!", meaning "God wills it" was the battle cry of the Crusaders. It came from a speech the Pope gave while gathering support for the First Crusade.
2. The Turks had been making constant advances in the East and were now threatening Constantinople itself. The Greek emperor (Alexius Comnenus) sent urgent letters to the Pope, asking for aid against the infidels, emphasizing that, unless assistance was extended immediately, the capital with all its holy relics must soon fall into the hands of the invaders.
