Alexander founds Alexandria Eschate
'Alexandria the Furthest' gets its walls in twenty days

Reaching the Jaxartes (Syr Darya), Alexander the Great founded a fortress city on its bank to hold back the Scythian nomads. Arrian says the walls rose in twenty days, and the city was named Alexandria Eschate, 'the Furthest'. Khujand stands on the site today.
Wikipedia (Russian) · Wikipedia (English) · 4th century BC
Meanwhile around the world (±25 years)
Europe
- 338 BC The Battle of Chaeronea — 9 years earlier
Middle East
- c. 351 BC Mausoleum at Halicarnassus — 22 years earlier
- 333 BC The Battle of Issus — 4 years earlier
- 331 BC Battle of Gaugamela — 2 years earlier
- 323 BC Death of Alexander the Great — 6 years later
- 312 BC Seleucus retakes Babylon: the Seleucid era — 17 years later
Africa
- 331 BC Founding of Alexandria — 2 years earlier
- 305 BC Ptolemy I proclaims himself king — 24 years later
Alive at the time
- Aristotle (aged 55)
- Alexander the Great (aged 27)
- Mencius (aged 43)
- Epicurus (aged 12)
- Chandragupta Maurya (aged 11)
- Diogenes of Sinope (aged 83)
- Olympias (aged 46)
- Zhuangzi (aged 40)
- Ptolemy I Soter (aged 38)
- Pyrrho (aged 31)