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The Byzantine army were destroyed by the turks
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Mercenary Seljuk Turks conquer Syria and Palestine. The City of Jerusalem is taken from the more civilised Saracen caliphs.
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3000 Christian Pilgrims were massacred in Jerusalem by the Turks that took over and the Christian churches were destroyed or used as stables
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Emperor Alexius I sent an embassy to Pope Urban II regarding the atrocities in Jerusalem and the growing threat of the Turks to Constantinople and the whole of Europe.Pope Urban II called a great council of the Church at Placentia, in Italy, to consider the appeal - decisions were deferred until later in the year
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Pope Urban II called a great council of clergy and nobles to meet at Clermont in France called the Council of Clermont. He called for a crusade against the Infidels
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Armed forces gathered at Constantinople to embark on the First Crusade. Emperor Alexius I shipped the Peoples Crusade over the Bosphorus. The Peoples Crusade were annihilated by the Turks in Anatolia
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Siege of Nicacea. Battle of Dorylaeum. The Siege of Antioch. Stephen of Blois and numerous French crusaders flee the siege of Antioch with news of the arrival of Emir Kerboga of Mosul
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Bohemond I, elder son of Robert Guiscard, led the capture of Antioch Emir Kerboga of Mosul and his army of 75,000 lays siege to the crusaders led by Bohemond. The siege of Arqah, near Tripoli. The Battle of Orontes. The First Crusade wins a victory forcing Emir Kerboga to lift the siege of Antioch. Raymond of Toulouse leads the crusaders from Antioch and to Jerusalem. The soldiers of the First Crusade successfully scale the walls of Jerusalem and take the Holy city