Year of the Four Emperors: Did you mean...?

The French Republican calendar, also known as the French Revolutionary calendar, was created during the French Revolution (1789-1799) in an attempt to build a new society separate from the vestiges of the Ancien Régime. First implemented...

Maximinius Thrax ruled briefly as the Roman emperor from 235 CE to his death in 238 CE. The young Roman Emperor Alexander Severus secured the imperial throne after the assassination of his cousin Elagabalus by the Praetorian Guard in 222...

Valerian ruled as emperor of the Roman Empire from 253 CE until his capture in 260 CE. In 253 CE an elderly Roman military commander and experienced former senator was proclaimed emperor by his troops - a very common occurrence at the time...

The Western Roman Empire is the modern-day term for the western half of the Roman Empire after it was divided in two by the emperor Diocletian (r. 284-305 CE) in c. 285/286 CE. The Romans themselves did not use this term. At its height (c...

The Roman Empire, at its height (c. 117), was the most extensive political and social structure in western civilization. Building upon the foundation laid by the Roman Republic, the empire became the largest and most powerful political and...

The Battle of Immae (272 CE) was fought between the forces of the Roman emperor Aurelian (270-275 CE) and those of the Palmyrene Empire of Zenobia (267-273 CE) resulting in a Roman victory and, ultimately, the capture of Zenobia and an end...

The Heian Period of Japanese history covers 794 to 1185 CE and saw a great flourishing in Japanese culture from literature to paintings. Government and its administration came to be dominated by the Fujiwara clan who eventually were challenged...

The Cheyenne are a North American Native nation, originally from the Great Lakes region, who migrated to modern-day Minnesota and then to areas in North Dakota and further southwest. They are associated with the Plains Indians culture and...

Decius was Roman emperor from 249 to 251 CE. In 249 CE Roman emperor Philip the Arab sent senator Decius to be the governor of the troubled provinces of Moesia and Pannonia. Roman legions under the ineffective command of the governor there...

Cniva (also given as Kniva, c. 250 CE to possibly 270 CE) was the king of the Goths who defeated Emperor Decius (249-251 CE) at the Battle of Abritus in 251 CE. Little is known of him other than his campaign in 251 CE, in which he successfully...