For 10 points, name this first Christian emperor.
This man became sole emperor of the Western Roman Empire following Maxentius' death at the Battle of Milvian Bridge. This man would later gain control of the Eastern Roman Empire following his victory over Licinius (lih-SIN-ee-uss) at the Battle of Adrianople. This man issued the Edict of Milan, which established religious toleration throughout the Roman Empire. For 10 points, name this first Christian emperor.
This man became sole emperor of the Western Roman Empire following Maxentius' death at the Battle of Milvian Bridge.
{Constantine} the {Great} [{or Constantine I; prompt on} Constantine]