The Roman Empire is threatened on several fronts at the same time. Africa revolts and tribes in northwest Germania, under the name of the Franks, are raiding the Rhine frontier.
Mani, a young mystic of Ctesiphon, proclaims himself a prophet at the court of Ardashir I. He preaches his doctrine, Manichaeism, throughout the Sassanid Empire.[2]
Shapur I makes a pre-emptive attack on Antioch to drive out the Romans. Gordian's father-in-law, Timesitheus, leads a Roman army to defeat the Sassanids at Carrhae and Nisibis.
King Ardashir I, founder of the Sassanid Empire, dies after a 30-year reign. He is succeeded by his son and co-ruler Shapur I.
Timesitheus becomes ill and dies under suspicious circumstances. Shapur I retreats to the Sassanid Empire, giving up all the territories he has conquered.
Philip the Arab (Marcus Julius Philippus) declares himself co-emperor, and makes a controversial peace with the Sassanian Empire, withdrawing from their territory and giving Shapur 500,000 gold pieces. The Sassanians occupy Armenia.
Philip the Arab is recognized by the Roman Senate as the new Roman Emperor with the honorific Augustus. He nominates his son Philippus, age 6, with the title of Caesar and makes him heir to the throne; gives his brother Priscus supreme power (rector Orientis) in the Eastern provinces; and begins construction of the city of Shahba (Syria) in the province of his birth.
The vassal Upper Mesopotamian kingdom of Osroene is absorbed into the Roman Empire, its last ruler being Abgar (XI) Farhat Bar Ma’nu.
Plotinus, Greek philosopher, escapes the bloodshed that accompanies the murder of Gordianus III and makes his way to Antioch. Back in Rome he founds his Neoplatonist school and attracts disciples like Porphyry, Castricius Firmus and Eustochius of Alexandria.
Decian persecution: Decius begins persecuting Christians, and others refusing to sacrifice publicly to the Roman gods for the well-being of the emperor.
February 5 – Incident at Gaoping Tombs: In the Chinese state of Cao Wei, regent Sima Yi, in a coup d'état, forces his co-regent Cao Shuang to relinquish his power, after taking control of the capital city of Luoyang. Sima Yi issues a memorial, which lists the various crimes he and his associates has committed.
In Alexandria, the populace pillages the homes of Christians.
^Edwell, Peter (2007). Between Rome and Persia: The Middle Euphrates, Mesopotamia and Palmyra Under Roman Control. Routledge. p. 168. ISBN9781134095735.
^Stratton, J. M. (1969). Agricultural Records. London: John Baker. ISBN0-212-97022-4.
^Alan K. Bowman; Peter Garnsey; Averil Cameron, eds. (2008). The Cambridge ancient history. Vol. 12, The crisis of empire, A.D. 193-337 (2nd ed.). Cambridge: Cambridge University Press. p. 37. ISBN978-1-139-05392-1. OCLC457145065.