# Edict of Thessalonica (380)

URL: https://christianity-history.com/timeline/380-edict-of-thessalonica
Location: Thessalonica
Themes: Politics

Theodosius I declares Nicene Christianity the official religion of the Roman Empire. At this point in the timeline (27 February 380), the Bishop of Rome was Pope Damasus I (1 October 366 – 11 December 384).

## Why it matters
Edict of Thessalonica mattered because it changed the relationship between the churches and political power.

Pope at the time: [Pope Damasus I](https://christianity-history.com/popes/pope-damasus-i)

## Sources
- [Wikipedia — Edict of Thessalonica](https://en.wikipedia.org/wiki/Edict_of_Thessalonica)
- [Encyclopaedia Britannica topic lookup — Edict of Thessalonica](https://www.britannica.com/search?query=Edict+of+Thessalonica)
- [Wikipedia — Age Of Councils (period overview)](https://en.wikipedia.org/wiki/First_seven_ecumenical_councils)