A predecessor to this declaration was seen several  years earlier when Galerius issued a similar one to his territories, which was seen as  the definitive end of the Diocletian Persecution.
The text of this decree was actually contained in a collaborative letter which was  sent to many important governors. A predecessor to this declaration was seen several  years earlier when Galerius issued a similar one to his territories, which was seen as  the definitive end of the Diocletian Persecution. FTP name this proclamation issued  in 313 by Licinius and Constantine I which announced universal religious tolerance  in the Roman Empire.
The text of this decree was actually contained in a collaborative letter which was  sent to many important governors.
Edict of Milan