Constantine the Great By Telia 272 Constantine was born 311 Galerius died 311 Civil war erupter. Maxentius emperor of Rome 311 Constantine had a dream to fight with the Christian cross 312 Constantine approached Rome 313 Constantine becomes a Christian 313 Signed Edict of Milan (to not persecute Christians) 324 Constantine became the ruler of untitled Rome 324 Constantine defeated Licinius 324 defeated Licinius and became leader of united Rome 330 Constantinople established 330 Constantinople was made new Capital of Roman Empire 337 Constantine died