
Co-emperor with Constantine who was eventually executed.
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Licinius met Constantine in Milan and agreed to a policy of religious toleration for Christians. The agreement, known as the Edict of Milan, granted freedom of worship throughout the Roman Empire.
Licinius was defeated by Constantine at the Battle of Cibalae in Pannonia. The loss forced Licinius to cede most of the Balkan provinces to Constantine, significantly weakening his position as co-emperor.
Constantine decisively defeated Licinius at the Battle of Chrysopolis near Chalcedon. Licinius surrendered and was initially spared, but was later executed on charges of plotting rebellion, ending the Tetrarchy.
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