320 BC

Centuries:	5th century BC · 4th century BC · 3rd century BC
Decades:	350s BC 340s BC 330s BC 320s BC 310s BC 300s BC 290s BC
Years:	323 BC 322 BC 321 BC 320 BC 319 BC 318 BC 317 BC

[edit] Events

Estimation: Alexandria in Macedonian Egypt becomes the largest city of the world, taking the lead from Babylon in Macedonian Babylonia.[1]

Perdiccas, the Macedonian regent, is assassinated in Egypt by his lieutenants Seleucus, Peithon, and Antigenes, who offer the regency to Perdiccas's opponent, the Egyptian satrap Ptolemy I Soter. Ptolemy refuses the offer and makes Peithon and Arridaeus Regents.
Antipater, the governor of Macedon, marches to Syria. At Triparadisus, the First War of the Diadochi is brought to a conclusion. Antipater is recognized as Regent of the Empire, and the kings - the idiot Philip Arrhidaios and the infant Alexander IV - return with him to Macedon. Antigonus is recognized as military commander of Asia, with orders to hunt down and defeat Perdiccas's unvanquished lieutenant Eumenes. Ptolemy is recognized in his position in Egypt, while the assassins of Perdiccas are confirmed in their satrapies of Babylon, Media, and Susiana, respectively.

The fourth-century (Late Classical) period of sculpture ends in Ancient Greece and is succeeded by the Hellenistic period (approximate date).

Timocharis of Alexandria, Greek astronomer responsible for the first recorded observation of Mercury and the first star catalogue.

Anaximenes of Lampsacus, Greek rhetorician and historian.
Perdiccas, general of Alexander the Great and regent following his death. (assassinated)
Zoilus, Greek grammarian and critic.ca:320 aC