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| Millennia: | 1st millennium BC |
| Centuries: | 5th century BC - 4th century BC - 3rd century BC |
| Decades: | 370s BC 360s BC 350s BC - 340s BC - 330s BC 320s BC 310s BC |
| Years: | 349 BC 348 BC 347 BC 346 BC 345 BC 344 BC 343 BC 342 BC 341 BC 340 BC |
| Categories: | Births - Deaths - State leaders - Sovereign states Establishments - Disestablishments |
In 340 BC, Philip II of Macedon led an attack on Byzantium, leaving Alexander, now aged 16, to act as regent of Macedon.
Births
Deaths
