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   In AD 395, the emperor Theodosius divided the Roman Empire into two halves. In AD 395, the emperor Theodosius divided the Roman Empire into two halves.
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  Duration of the Byzantine Empire
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   In AD 476 the Western Roman Empire fell due to the attacks of the Germanic tribes. In AD 476 the Western Roman Empire fell due to the attacks of the Germanic tribes.
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  During his reign, the empire had its greatest period of glory and the empire conquered many territories.
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   This is the year when Muhammad fled to Medina. This event marks the beginning of the Muslim calendar. This is the year when Muhammad fled to Medina. This event marks the beginning of the Muslim calendar.
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  Spread of Islam during the Middle Ages
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  This was one of the three caliphates.
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  This was the second one of the three caliphates. The Islamic Empire reached the Península Ibérica during this caliphate.
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  This is the third one of the three Caliphates. When this Caliphate ended, the spread of Islam during the Middle Ages also ended.
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   In 1054, the East-West Schism took place. This was a split between the Orthodox Church, which recognised the Patriarch of Constantinople, and the Roman Catholic Church, which only accepted the authority of the Pope. In 1054, the East-West Schism took place. This was a split between the Orthodox Church, which recognised the Patriarch of Constantinople, and the Roman Catholic Church, which only accepted the authority of the Pope.
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   In 1453, the Turks captured Constantinople, marking the end of the Byzantine Empire's 1,000-year-long history. In 1453, the Turks captured Constantinople, marking the end of the Byzantine Empire's 1,000-year-long history.