In dictionaries:
Herodian Tetrarchy
a regional division of a client state of Rome, formed following the death of Herod the Great in 4 BCE.
Civil wars of the Tetrarchy
The civil wars of the Tetrarchy were a series of conflicts between the co-emperors of the Roman Empire, starting from 306 AD with the usurpation of Maxentius and the defeat of Severus to the defeat of Licinius at the hands of Constantine I in 324 AD.
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