istoryworld
All Events
The Christians of Rome use the catacombs as tomb chambers, and decorate the walls with murals on New Testament themes
The Picts win a dominant position among tribes in the northern regions of Britain, or Scotland
Cyprian, bishop of Carthage, is one of many Christians martyred for refusing to sacrifice to the Roman gods
Liu Hui writes a detailed commentary on the Chinese mathematical text Nine Chapters on the Mathematical Art, which includes a discussion of negative numbers
The emperor Aurelian, grateful for the apparent assistance of a Syrian sun god, establishes the cult of the Unconquered Sun - whose birthday is December 25
Diocletian, commanding an army near the Bosphorus in Thracia, is proclaimed emperor by his troops
Horses strong enough to carry men wearing armour are put to good use by northern barbarians, and by Romans in border regions such as Dacia
The Chinese transform the toe loop of nomadic horsemen into the metal stirrup
St Anthony, one of the early Christian hermits in the Egyptian desert, is tempted by terrifying hallucinations
Ten dynasties and nineteen kingdoms jockey for power in the three centuries after the fall of the Han dynasty
The emperor Diocletian initiates a sustained persecution of Christians in the Roman empire
Diocletian resigns from his position as Augustus because of ill health, and retires to Dalmatia
Constantine's father, recently appoinnted Augustus in the west, dies at York and the young man is proclaimed Augustus in his place by the legions in Britain
Constantine, preparing for battle against a rival at the Milvian Bridge, orders his men to wear a Christian symbol, the Chi-Rho, on their shields
After winning the battle at Milvian Bridge, Constantine marches into Rome and is formally acknowledged by the Senate as Augustus of the west
Constantine meets his co-emperor Licinius in Milan, and persuades him to follow a policy of encouraging the Christians
Warming to his new Christian role, Constantine summons more than 300 bishops to Arles to discuss the controversial issue of Donatus
Constantine founds several churches in Rome, among them the first St Peter's
The territory of the Gupta dynasty is extended by Chandra Gupta, to include most of the great plain of the Ganges
Pachomius organizes in Egypt the first community of Christian monks, at Dandara on the Nile
Constantine's new churches in Rome introduce an important element in church architecture, the transept
Roman mosaic is at its most lavish in the floors of Piazza Armerina, in central Sicily
Constantine executes Licinius in Thessalonica on a charge of attempted rebellion, a year after defeating him in battle
Constantine convenes a council of 200 bishops at Nicaea to discuss the beliefs of Arius, which are deemed to be heresy
