Jeruselam

            In 1095 Muslim armies took Jerusalem from the Christians.  Jerusalem was then ruled by the Seljuk Turks who were Muslim invaders.  Now the Seljuk Turks were fierce and brutal, so you're probably thinking things like what did the Seljuk Turks do to Christians?  They brutally harassed Christians and severely damaged their holy sites.  Capture of Jerusalem was accomplished by three days of massacres of the resisting Muslims and Jews with about 20,000 victims and the pillage of Muslims sanctuaries.   When the Turks conquered the Byzantine Empire, the  people in the Empire feared they would go west and conquer what was left of Europe.

            After attacks on the Turks by Christian Crusaders they took Jerusalem.  The Byzantine Empire then got control over western Europe.  The Crusaders ,who named Jerusalem the Capital of the Latin Kingdom, expelled Jews Muslims and non-Christians. Many Holy sites that were destroyed by the Muslims were rebuilt and restored. Such as The Church of the Holy Sepulcher. The church was rebuilt in 1149 and still stands in Jerusalem today.