Between 299 and 305 the Roman Empire...
In 305 Diocletian and Maximian both...
Diocletian and Maximian both retired...
Maximinus Daza refused to accept the...
After Galerius died in 311, the...
Following his victory over Licinius...
Constantine’s victory over Licinius...
In late 336 Constantine began...
The eldest of the three sons of...
In 336, shortly before the death of...
Constans had taken control of Gaul...