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313
The Edict of Milan
They declare that Christians and to be treated benevolently within the roman Empire. The western roman emperor and Licinius agreed to change policies towards Christians. -
431
The Ecumenical Council of Ephesus
declared that Jesus lives as a Man, and a God. Setting his status. The Nicene Creed is also declared a permanent holy text of the church. -
533
Mercurius becomes Pope John II.
He became the first pope to have a regnal name. Pope John II was gifted valuable titles such as professor of orthodox. -
590
Pope Gregory the Great
Reformed the ecclesiastical structure and administration. He established Gregorian chant who was also elected to be pope. -
Dec 24, 966
Mieszko I of Poland
Mieszko, I of Poland, converts to Catholicism, this starts a chain affect which concludes with the baptism of Poland.