When will y ou learn that history is past tense. Its like asking germans to tell why hitler killed so many jews. Give a answer to that.
Be sensible and try to see the good points in christianity. And also Roman catholic church does not follow what christianity follows. They drink, ,smoke, indulge in all the sins that the bible condemns.
The crusades were run by the catholic church which is not true christian representation. Sadly!
