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The Moorish Caliphate of Cordoba collaspes. Byzantine general George Maniaces captures Edessa.
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Panic spreads throughout Europe that the end of the universe mmay be near, on the supposed 1,000th anniversary of the crucifixion of Christ, due to some unusually harsh spring weather.
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George Maniaces begins a campaign againt the Arabs in Sicily.
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The first contact occurs between the Byzantine Empire and the Seljuks.
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William the Conqueror, with assistance from King Henry I of France, secures control of Normandy by defeating the rebel Norman barons at Caen.
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Unsuccessful raiders flee to Flanders.
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Cardinal Humbertus, a representative of Pope Leo IX, and Michael Cerularius, Patriarch of Constantinople, decree each other excommunication. Most historians look to this act as the final step in the initiation of the Great Schism between the Roman Catholic and Orthodox Christian Churches.
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The Seljuk Turks capture Baghdad.
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The Muslims expel 300 Christians from Jerusalem, and European Christians are forbidden to enter the Church of the Holy Sepulcher.
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