What Happened in 378 AD
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- Jan 14 Teotihuacan General Siyaj K'ak', conquers the important Mayan city Tikal and deposes its ruler
- Aug 9 Battle of Adrianople: Goth army defeats Roman forces under Emperor Valens, who is killed
- Jan 14 Great Jaguar Paw, Ruler of the Maya city of Tikal, disposed and presumed killed by the invasion of Teotihuacan General Siyaj K'ak'
- Aug 9 Flavius Valens, Emperor of Byzantium (364-78), dies in the Battle of Adrianople at 50
Augustus Caesar
Caligula
Constantine the Great
Julius Caesar
Mark Antony
Nero