View source for 191 BC

=== By place ===
==== Roman Republic ====
* The [[Roman Republic|Romans]] under [[Manius Acilius Glabrio (consul 191 BC)|Manius Acilius Glabrio]] and [[Cato the Elder]] cut the [[Seleucid]] king [[Antiochus III the Great|Antiochus III]] off from his reinforcements in [[Thrace]] and outflank his position at the pass of [[Thermopylae]] in the [[Battle of Thermopylae (191 BC)|Battle of Thermopylae]]. With the remainder of his troops, Antiochus flees to [[Chalcis]] on [[Euboea]] and from there he retreats by sea to [[Ephesus]].
* Manius Acilius Glabrio then turns his attention to the [[Aetolian League]], which has persuaded Antiochus to declare war against Rome, and is only prevented from crushing them by the intercession of [[Titus Quinctius Flamininus]].
* [[Scipio Africanus]] persuades the [[Roman Senate]] to continue the war against Antiochus III by making him the chief commander and allowing him and his brother, [[Lucius Cornelius Scipio Asiaticus]], to follow Antiochus into [[Anatolia]].
* The [[Roman calendar]], which is four months ahead of the seasons, is adjusted (by ''[[Lex Acilia de intercalando]]'').
* [[Cisalpine Gaul]] becomes a Roman province.

==== Carthage ====
* The [[Carthage|Carthaginians]] manage to collect the [[indemnity]] due to Rome (through the peace treaty signed between them ten years earlier) but not payable in full for 50 years. The Romans, in order to keep their hold on Carthage, refuse to accept the early payment of the indemnity.

==== Parthia ====
* [[Arsaces II]], king of [[Parthia]] is succeeded by his cousin [[Phriapatius of Parthia|Phriapatius]].

==== China ====
* [[Emperor Hui of Han]] lifts the ban on [[Confucianism|Confucian]] writings ordered in [[213 BC]].
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