what are the crusades and why did they occur
Rating Newest Oldest. Best Answer: The Crusades were a series of military expeditions by Western Europeans to the Muslim controlled Middle East. Their main purpose was to liberate the Holy Land, and in particular the holy Christian places in Jerusalem,from Muslim occupation and control.hey were a series of attacks by Christian Europeans against the Muslim-held Holy Lands in the Middle East (Jerusalem, in modern-day Israel, specifically).