4th century BC

{{centuryBCbox | cp = 5th century BC | c = 4th century BC | cna = 3 | cnb = rd century BC }} (2nd millennium BC - 1st millennium BC - 1st millennium)

Overview

383 BC Second Buddhist Councel at Vesali, 100 years after the Parimirvana.
323 BC Alexander the Great conquers the Persian Empire
312 BC Seleucus I Nicator establishes himself in Babylon, founding the Seleucid Empire
Invasion of the Celts into Ireland
Battle of the Allia and subsequent Gaulish sack of Rome
The Scythians are beginning to be absorbed into the Sarmatian people.
The Romans conquer the Abruzzi region, decline of the Etruscan civilization

Marcus Furius Camillus, Roman dictator (c.446–365 BC).
Plato, philosopher (c.427–347 BC).
Tollund Man, Human sacrifice victim on the Jutland Peninsula in Denmark, possibly the earliest known evidence for worship of Odin.
Aristotle, philosopher and scientist (384–322 BC).
Philip II of Macedonia (born 382, reigned 359–336 BC).
Darius III of Persia, last King of the Achaemenid dynasty (born 380, reigned 359–330 BC).
Mencius, Chinese philosopher and sage (371–289 BC).
Ptolemy I Soter, founder of the Ptolemaic dynasty (c.367–283 BC).
Shang Yang, Prime Minister of Qin, his reform helped Qin to become the strongest country and later unified China (term 361–338 BC).
Seleucus I Nicator, founder of the Seleucid Empire (c.358–281 BC).
Alexander the Great, King of Macedon, invades Asia Minor, Persia and reaches India (born 356, reigned 336–323 BC).
Brennus, Gaulish chieftain
Laozi
Zhuangzi
Archon of Pella, Babylonian satrap

Oldest Brahmi script dates from this period (Brahmi is the ancestor of Indic scripts)
Romans build first aqueduct
Chinese use bellows