Constantine the Great portrait, color vector illustration

 constantine, constantine the great, roman emperor, ancient rome, roman empire, byzantine, christianity, conversion, milvian bridge, vision, cross symbol, edict milan, milan edict, tolerance, religion, empire, power, leadership, military, battle, history, antiquity, europe, asia minor, constantinople, new rome, city founding, governance, reform, politics, senate, imperial court, dynasty, architecture, basilica, coins, statue, legacy, expansion, civil war, tetrarchy