What was one impact of constantine's decision to legalize christianity? more people converted to islam. constantine lost power. christians were no longer persecuted. people moved out of constantinople.

   Christians were no longer persecuted

Explanation:  Constantine's decision to legalize Christianity was enforced by the Edict of Milan 313 AD. In this way, Christianity became one of the religions of the Roman Empire, not yet the official religion of the Empire. This ended the era of so-called early Christianity, which was characteristic of the persecution of Christians, but also of the diversity of Christian teachings and gospels. Shortly after the legalization of Christianity, apart from the end of the persecution of Christians, a Ecumenical Council was convened to decide which gospel would become official as part of the official Bible. In this way, the adherents of the various Christian Gnostic teachings did not become part of the official Bible, and began to be persecuted as heretics.

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~courtney