| AD | Event |
| 305-323 | Period of Civil Wars and Confusion
Character and Situation of Constantius
—Of Galerius
The two Caesars, Severus and Maximin:
Ambition of Galerius disappointed by two Revolutions |
|
| 274 | Birth, Education, and Escape of Constantine |
| 306 |
Death of Constantius, and Elevation of Constantine
He is acknowledged by Galerius, who gives him only the Title of Caesar, and that of Augustus to Severus; The Brothers and Sisters of Constantine
Discontent of the Romans at the Apprehension of Taxes
Maxentius declared Emperor at Rome
—Maximian reassumes the Purple |
|
| 307 | |
| 308 | Six Emperors
—Misfortunes of Maximian |
| 310 | His Death |
| 311 | Death of Galerius
—His Dominion shared between Maximin and Licinius |
| 306-312 | Administration of Constantine and Maxentius;
Tyranny of Maxentius in Italy and Africa |
|
| AD | Event |
| 312 | |
| 313 | His Alliance with Licinius; War between Maximin and Licinius
The Defeat of Maximin
— and death
; Cruelty of Licinius
Unfortunate Fate of the Empress Valeria and her Mother |
|
| 314 | |
| 315-323 | General Peace and Laws of Constantine |
| 322 | The Gothic War |
| 323 | Second Civil War between Constantine and Licinius Battle of Hadrianople
Siege of Byzantium, and Naval Victory of Crispus
Battle of Chrysopolis; Submission and Death of Licinius |
|
| 324 | Reunion of the Empire
|
|---|
|