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[1].
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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