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Iv'e been reading recently about the lead up to Constantine's adoption of the Christian religion, and that got me wondering, what would of happened if the state of Rome adopted another religion such as Mithraism or Judaism.

To my knowledge, Mithraism was quite popular among the soldiers, however, one drawback was not allowing females to join, Judaism, didn't accept the conversions of people who were not from the Levant, and had an unusual insistence on circumcising adults.

Is it plausible that Rome adopts any of these religions as the state religion?
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