Editing 3rd century BC (section)

===[[270s BC]]===
[[File:Sarnath capital.jpg|thumb|The [[Lion Capital of Ashoka]] of [[Sarnath]], [[Uttar Pradesh]], India, now the [[National Emblem of India]], 3rd century BC, dated to the reign of [[Ashoka the Great]] during the [[Maurya Empire]]]]

*[[279 BC]]: [[Singidunum]] and [[Taurunum]], today's [[Belgrade]] and [[Zemun]], are founded by [[Scordisci]] Celts.
*After failing to decisively defeat the Romans, [[Pyrrhus of Epirus]] withdraws from [[Italy]].
*[[Gauls|Gallic]] migration to [[Macedonia (ancient kingdom)|Macedon]], [[Thrace]] and [[Galatia]]. During the [[Gallic invasion of Greece]], the Macedonian king [[Ptolemy Keraunos]] is killed in battle by the forces of the Celtic ruler [[Bolgios]]. However, both he and [[Brennus (3rd century BC)|Brennus]] are driven out of Macedonian territory by [[Sosthenes of Macedon]].
*[[277 BC]]: in the [[Battle of Lysimachia]], the invasion by Gauls is finally defeated by [[Antigonus II of Macedon]]. 
*[[274 BC]]: the [[Syrian Wars|First Syrian War]] erupts between [[Antiochus I Soter]] of the [[Seleucid dynasty]] and [[Ptolemy II Philadelphus]] of the [[Ptolemaic dynasty]] over control of [[Syria]] and southern [[Anatolia]].
*[[273 BC]] – [[232 BC]]: [[Ashoka the Great]] ruled the [[Maurya Empire]].