373 CE

Saint Martin of Tours undertakes the Christianization of Gaul. Battle of the Tanais River: The Huns defeat the Alans near the Don, sending the remnants fleeing westward. The Aqueduct of Valens is inaugurated near Constantinople (modern Istanbul); the aqueduct has a length of 971 meters.

In the 370s, the 4th century.

Geopolitics & Diplomacy

  • The Aqueduct of Valens is inaugurated near Constantinople (modern Istanbul); the aqueduct has a length of 971 meters.source

Conflict & Security

  • Battle of the Tanais River: The Huns defeat the Alans near the Don, sending the remnants fleeing westward.source
  • King Shapur II declares war as a result of Valens' support of Armenia. Emperor Valens makes Antioch his military base for the campaign against Persia.source

Exploration & Expansion

  • Count Theodosius the Elder is appointed commander of an expedition to suppress the rebellion of Firmus in Mauretania.source

Religion & Belief

  • Saint Martin of Tours undertakes the Christianization of Gaul.source
  • Quintus Aurelius Symmachus becomes proconsul of Africa, and is made a member of the pontifical college.source
  • Emperor Valens is converted to Arianism, and orders the persecution of Trinitarian Christians in the Roman East.source

Births

  • Murong Sheng (or Daoyun), Chinese emperor of the Later Yan Dynasty (died 401)source
  • Murong Hui, Chinese general and prince of the Later Yan Dynasty (died 397)source
  • Synesius of Cyrene, Christian bishop (approximate date)source

Deaths

  • May 2 – Athanasius of Alexandria, Egyptian bishop and saint (born 296)source
  • June 9 – Ephrem the Syrian, Syrian Orthodox priest and saint (born 306)source
  • Huan Wen (or Yuanzi), Chinese general and regent (born 312)source
  • Sun Sheng, Chinese historian and politician (born 302)source
  • Nerses I (the Great), Armenian catholicos (or patriarch)source