4th century

(3rd century - 4th century - 5th century - other centuries)

• Definitive declaration of biblical canon: Council of Carthage
• Demotic is replaced by Greek
• Constantine I ends persecution of Christians in the Roman Empire; following the death of Julian the Apostate, Christianity is made the official religion of the Empire. The Roman Empire's seat of government is moved to Constantinople.
• Destruction of the Roman Army at the Battle of Adrianople in 378

Significant persons

• Saint Ambrose, bishop of Milan
• Ammianus Marcellinus, Roman Historian
• Emperor Constantine I
• Saint Martin of Tours

Inventions, Discoveries, Introductions

Decades and Years