哪位好心人帮我找下关于十字军东征的英文介绍吧～拜托

The Crusades were a series of military conflicts of a religious character waged by Christians during 1095–1291, most of which were sanctioned by the Pope in the name of Christendom.[1] The Crusades originally had the goal of recapturing Jerusalem and the sacred "Holy Land" from Muslim rule and were originally launched in response to a call from the Eastern Orthodox Byzantine Empire for help against the expansion of the Muslim Seljuq dynasty into Anatolia.[2][3]

The term is also used to describe contemporaneous and subsequent campaigns conducted through to the 16th century in territories outside the Levant[4], usually against pagans, those considered by the Catholic Church to be heretics, and peoples under the ban of excommunication[2] for a mixture of religious, economic, and political reasons.[5] Rivalries among both Christian and Muslim powers led also to alliances between religious factions against their opponents, such as the Christian alliance with the Sult