-
Period: 313 to 337
Reign of Constantine
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325
Council of Nicaea
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Period: 329 to 379
Life of St. Basil of Caesarea
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330
Transfer of Roman government to Constantinople
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Period: 527 to 565
Reign of Justinian
-
Period: 717 to 741
Reign of Leo III
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Period: 726 to 843
Iconoclastic controvesy
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Period: 801 to 900
Mission of St. Cyril and St. Methodius to the Slavs
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Period: 976 to 1025
Reign of Basil II, the "Bulgar- Slayer"
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989
Conversion of Prince Vladimir of Kiev to Orthodox Christianity
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1054
Beginning of the schism between the eastern and western Christian churches
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Period: 1202 to 1204
Fourth crusade
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1453
Fall of Constantinople