WHAT HAPPENED IN 4. CENTURY
Find out what all happened in the 4. century

Arbogast has Eugenius elected Western Roman Emperor. (22. August 392)

Battle of Strasbourg: Julian, Caesar (deputy emperor) and supreme commander of the Roman army in Gaul, wins an important victory against the Alemanni at Strasbourg (Argentoratum). (25. August 357)

San Marino, one of the smallest nations in the world and the world's oldest republic still in existence, is founded by Saint Marinus. (3. September 301)

Battle of the Frigidus: The Christian Roman Emperor Theodosius I defeats and kills the pagan usurper Eugenius and his Frankish magister militum Arbogast. (6. September 394)

Constantine II, Constantius II, and Constans I succeed their father Constantine I as co-emperors. The Roman Empire is divided between the three Augusti. (9. September 337)

Sixteen Kingdoms: Jin Xiaowudi, age 10, succeeds his father Jin Jianwendi as Emperor of the Eastern Jin Dynasty. (12. September 372)

Emperor Constantine the Great consecrated the Church of the Holy Sepulchre in Jerusalem. (13. September 335)

Emperor Severus II is captured and imprisoned at Tres Tabernae. He is later executed (or forced to commit suicide) after Galerius unsuccessfully invades Italy. (16. September 307)

Constantine the Great decisively defeats Licinius in the Battle of Chrysopolis, establishing Constantine's sole control over the Roman Empire. (18. September 324)

Flavius Dalmatius is raised to the rank of Caesar by his uncle, emperor Constantine I. (19. September 335)

Battle of Mursa Major: the Roman Emperor Constantius II defeats the usurper Magnentius. (28. September 351)

Roman usurper Procopius bribes two legions passing by Constantinople, and proclaims himself Roman emperor. (28. September 365)

Alexander the Great defeats Darius III of Persia in the Battle of Gaugamela. (1. October 331. BC)

Roman Emperor Theodosius I concludes a peace treaty with the Goths and settles them in the Balkans in exchange for military service. (3. October 382)

Roman Emperor Licinius is defeated by his colleague Constantine I at the Battle of Cibalae, and loses his European territories. (8. October 314)

Pappus of Alexandria, Greek philosopher, observes an eclipse of the sun and writes a commentary on The Great Astronomer (Almagest). (18. October 320)

The temple of Apollo at Daphne, outside Antioch, is destroyed in a mysterious fire. (22. October 362)

Martyrdom of Saint Demetrius of Thessaloniki (26. October 306)

Constantine the Great is said to have received his famous Vision of the Cross. (27. October 312)

Maxentius is proclaimed Roman Emperor. (28. October 306)