312
- This article is about the year 312. For other uses, see 312 (disambiguation).
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Events
By Place
Roman Empire
- October 28 - Battle of Milvian Bridge: Constantine I defeats Maxentius and becomes the only Roman Emperor in the West.
- Construction of the Arch of Constantine in Rome begun.
By Topic
Religion
- The Council of Carthage supports Donatism which espouses a rigorous application and interpretation of the sacraments. These doctrines will be condemned by the Council of Arles in 314.
- Roman Emperor Constantine converts to Christianity himself, and thereafter acknowledges Christianity as the Roman religion.
Births
Deaths
- October 28 - Maxentius, Roman Emperor slain in battleaf:312
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