persecution of Christians of under roman emperor Nero By flopez21 250 persecution under roman emperor Decius 251 council of carthage 303 persecution under roman emperor Diocletian 313 emperor Constantine issues the edict of Milan 325 council of nicaea 330 emperor Constantine divides the roman empire into the east and west 330 construction of the first St. peters basilica in Rome 397 the councils of hippo and carthage determine which books will become part of the new testament 410 the Visigoths destroy the city of Rome 431 council of Ephesus 451 council of Chalcedon 476 the western roman empire collapses 496 Clovis, the king of the franks, coverts to Catholicism