Battle of the Catalaunian Plains
Aetius and the Visigoths stop Attila in Gaul

The Roman general Aetius, allied with the Visigoths, halted Attila's Hunnic invasion of Gaul; the Visigothic king Theodoric I fell in the battle. It checked the Huns' advance west, and their empire broke up after Attila's death in 453.
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Meanwhile around the world (±25 years)
Asia
- c. 427 Founding of Nalanda — 24 years earlier
Americas
- c. 431 Ilopango eruption — 20 years earlier
Alive at the time
- Attila (aged 45)