TheTimeMap

The Edict of Milan, issued in 313 CE by Roman emperors Constantine I and Licinius, granted religious tolerance throughout the Roman Empire. It ended the persecution of Christians and allowed people to worship freely, marking a major step toward religious fr...

Constantius Chlorus was elevated to the rank of Augustus on May 1st, 305, following the abdication of the previous Tetrarchs, Diocletian and Maximian. This event marked a significant transition in the governance structure of the Roman Empire under the Tetra...

The Tetrarchy was established by Emperor Diocletian in 293 to address administrative and military challenges in the Roman Empire. This political system divided the empire into four parts, each ruled by a separate emperor.Two senior emperors called Augusti a...

The Battle of the Margus was a significant confrontation between the Roman emperors Carinus and Diocletian. The battle took place near the Margus River, in the region of Mačva, which is in modern-day Serbia.Diocletian emerged victorious, leading to the down...

Emperor Probus was assassinated by his own soldiers after numerous military campaigns to secure the Roman Empire's borders. His leadership was challenged internally despite his successes abroad.The mutiny reflected the political instability during the Crisi...

Valerian was proclaimed Roman Emperor following the death of his predecessor Aemilianus. His accession marked a significant change in leadership during a period fraught with external threats and internal instability for the empire.Valerian sought to consoli...

Following the death of Emperor Maximinus Thrax, the Roman Senate appointed Pupienus and Balbinus as co-emperors to restore order within the Roman Empire. Their joint accession marked a rare instance in Roman history where two individuals shared imperial pow...

The revolt of Gordian I was a significant uprising against the Roman Emperor Maximinus Thrax in 238, known as the Year of the Six Emperors. Senatorial opposition to Maximinus' harsh rule led to Gordian I being proclaimed emperor in Africa Proconsularis.Gord...

Gordian III ascended to the Roman imperial throne following a period of political instability known as the Year of the Six Emperors. At the age of thirteen, he was declared emperor by the Roman Senate after the deaths of Gordian I and Gordian II and the ove...

Severus Alexander, the last emperor of the Severan dynasty, was assassinated by his own soldiers in March of 235 CE near the city of Mutina along the Danube frontier. His death marked the end of relative stability in the Roman Empire and triggered the Crisi...

Clodius Albinus, governor of Britannia, declared himself Caesar in a bid to claim imperial power during the turbulent Year of the Five Emperors. His proclamation challenged the authority of Septimius Severus and intensified the civil conflicts engulfing the...

The Battle of Issus was fought between the forces of the Roman Emperor Septimius Severus and his rival Pescennius Niger. It marked a defining moment during the Year of the Five Emperors as Severus sought to consolidate his claim over the Roman Empire.The ba...

Pescennius Niger, governor of Syria, declared himself Roman emperor after the death of Emperor Pertinax. His claim to the throne sparked a civil war against Septimius Severus, who also claimed the emperorship.The conflict primarily unfolded in the eastern p...

Pertinax, Roman Emperor for a brief reign, was assassinated by members of the Praetorian Guard. His attempts to reform the empire and enforce discipline antagonized the imperial guards and the Roman elite.The assassination occurred within the palace walls i...

Pertinax was proclaimed Roman Emperor by the Senate following the assassination of Commodus. His accession marked a brief attempt to restore discipline and order in the empire after a period of decline.Despite his efforts at reform, Pertinax's rule was shor...

Commodus, Roman Emperor and son of Marcus Aurelius, was assassinated in his palace in Rome. His death ended the Nerva–Antonine dynasty.The emperor was strangled by his wrestling partner under orders from conspirators within the senate and the Praetorian Gua...

Emperor Commodus, known for his unconventional rule, famously participated in gladiatorial combats in Rome. Unlike previous emperors, he openly fought as a gladiator, staging public spectacles in the Colosseum.His participation was met with mixed reactions,...

Lucius Verus was formally declared co-emperor alongside Marcus Aurelius, marking a significant moment in Roman imperial succession. This joint rule established a precedent for multiple emperors sharing power concurrently.The accession reflected the Senate's...

Trajan, one of Rome's most respected emperors known for his military conquests and extensive public works, died in the summer months during a campaign in Mesopotamia. His death marked the end of an era characterized by territorial expansion and the consolid...

Emperor Nerva formally adopted Trajan as his heir in a move to secure the imperial succession and stabilize the Roman Empire. This adoption marked the beginning of the era of the "Five Good Emperors."Trajan's adoption was a pivotal moment in Roman political...

After the murder of Emperor Domitian, the Roman Senate appointed Nerva as emperor, marking a shift from autocratic rule to a more stabilizing governance. Nerva, previously a respected senator, was seen as a compromise candidate to appease both the military ...

Following a year of civil war known as the Year of the Four Emperors, Vespasian emerged as the uncontested ruler of the Roman Empire. His rise marked the end of the Julio-Claudian dynasty's instability and the beginning of the Flavian dynasty.Vespasian cons...

Vitellius was declared emperor by the legions of Germania during the chaotic Year of the Four Emperors. After the death of Emperor Otho, Vitellius marched to Rome where he was formally recognized as emperor.This period was marked by civil war and political ...

Following the death of Emperor Galba, Otho swiftly ascended to power in Rome, marking a critical juncture in the Year of the Four Emperors. His accession was characterized by rapid political maneuvering within the imperial palace on Palatine Hill.Despite in...

Galba was declared Roman Emperor following the assassination of Nero, marking the end of the Julio-Claudian dynasty. His accession was largely supported by the Senate and the Praetorian Guard in Rome.His rule began a turbulent period known as the Year of th...

The Year of the Four Emperors was a tumultuous period marking rapid succession of Roman emperors after the fall of Nero. It involved the rise and fall of Galba, Otho, Vitellius, and Vespasian within a single year.This crisis resulted in civil war and politi...