Edict of Thessalonica (380)
mechanism
In 380 Rome didn't just allow Christianity — it made one version the only legal religion and criminalized the rest.
Who they are
The Edict of Thessalonica (380), issued by Emperor Theodosius I.
What they do
It made Nicene Christianity the exclusive official religion of the Roman Empire.
How it works
It made paganism and religious disagreement crimes, handing the Church a total monopoly across the empire.
Why it matters
The engine treats it as the step where the state religion becomes absolute and all rivals are outlawed.
The engine's record — word for word
Report #76. Theodosius I mandated Nicene Christianity as exclusive Roman state religion. Criminalized paganism + theological dissent. Granted absolute Church monopoly within empire.
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