Do you really think that being snarky and ugly is a good way to exchange ideas?
And, yes, the Crusades were initiated by Europeans. But - they were in response to islamic incursions, and sought to retake formerly Christian areas.
As per Wikipedia: "The Crusades were a series of several military campaigns—usually sanctioned by the Papacy—that took place during the 11th through 13th centuries. Originally, they were Roman Catholic Holy Wars to recapture Jerusalem and the Holy Land from the Muslims, but some were directed against other Europeans, such as the Fourth Crusade against Constantinople, the Albigensian Crusade against the Cathars of southern France and the Northern Crusades."
Also, just a tip - might be a good idea to use sources other Wikipedia, which can be notoriously biased and inaccurate.