This article is about the year 340. For other uses, see 340 (number).
Events
By Place
Roman Empire
- Constantinople, capital of Emperor Constantius II, becomes the largest city of the world, taking the lead from Rome, capital of Emperor Constans.[1]
- Constantine II attacks his brother Constans near Aquileia, aiming for sole control of the western half of the Empire, but is defeated.
- Constans and Constantius II split the Empire between them.
By Topic
Religion
Births
Deaths
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