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312
Constantine Converts to Chrisianity
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313
Constantine stopped persecution of Christians
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325
The Council of Nicea
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336
Death of Constantine
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430
Death of Augustine
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451
Council of Chalcedon
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Sep 1, 1054
Great Schism
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Sep 1, 1415
Council of Constance
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Sep 1, 1420
Crusade against Hussites
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Sep 1, 1483
Birth of Martin Luther
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Augustine converts to Christianity
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Christianity made official religion of Roman Empire
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Second Council of Nicea
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Charlemagne crowned emperor by the pope
He advances the church, education, and culture.
