- 391 BC
* The Persian
satrap, Struthas, pursues an anti-Spartan policy, prompting the Spartans to order their governor to the Greek cities of Ionia, Thibron, to attack him. Thibron successfully ravages Persian territory for a time, but is killed, along with a number of his men, when Struthas ambushes them.
Evagorasof Salamis and the Persians battle each other for control of Cyprus. Aided by the Athenians and the Egyptians, Evagoras extends his rule over the greater part of Cyprus and to several cities of Anatolia.
* The Athenian general,
Iphicrates, with a force composed almost entirely of light troops and peltasts(javelin throwers), wins a decisive victory against the Spartan regiment that has been stationed at Lechaeumin the Battle of Lechaeum. This is the first time that a force of light infantrydefeats a unit of Greek hoplites.
* Iphicrates also campaigns against
Phliusand Arcadia, decisively defeating their armies and plundering the territory of the Arcadians when they refuse to engage his troops. After this victory, an Argive army marches to Corinth, and, seizing the Acrocorinth, effectively merges Argos and Corinth.
* The Roman dictator
Marcus Furius Camillusis accused of making an unfair distribution of the spoils of his victory at Veii. He goes into voluntary exile.
Quintus Fabius Ambustusand two other Fabiiare sent as ambassadors by Rome to a wandering tribe of Celts(whom the Romans call Gauls), under Brennus, who are advancing down the Tiberwhile the Celtic army is besieging Clusium. After Quintus Fabius' group become involved in a skirmish with the Gauls and kill one of the Gauls' leaders, the offended Gauls demand that Rome surrender the Fabii members to them. The Romans refuse, so the Gauls advance on Rome.
Thibron, Spartan general
Mozi, Chinese philosopher(approximate date) (b. c. 470 BC)
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