280

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Events

By Place

Roman Empire

* Emperor Probus suppresses the revolt of the usurper Proculus.
* Probus chases the Alani off to Asia Minor.
* The commander of the Roman fleet on the Rhine, Bonosus, is proclaimed emperor. Beaten by Probus' troops, Bonosus is hung.
* In Alexandria, Julius Saturninus, who is in charge of the defense of the East, is declared emperor. He withdraws to Apamea, is besieged and put to death.
* Owing to the constant threat of invasion, the cities in Gaul construct or reinforce their defensive walls.

Europe

* The Germanic tribe the Thuringii appears.

Asia

* The Kingdom of Wu is dissolved by Jin, finally ending the Three Kingdoms period in the history of China.

By Topic

Arts and Sciences

* The Greek mathematician Pappus demonstrates geometrically the property of the center of gravity.

Births

* Saint George, soldier of the Roman Empire and later Christian martyr (or 275, approximate date)

Deaths

* Maharaja Sri-Gupta of the Gupta dynasty
* Proclus, Roman usurper
* Cen Hun, minister under the Kingdom of Wu
* Kang Senghui
* Zhang Ti