The Spartan ruler, Nabis, acquires the important city of Argos from Philip V of Macedon, as the price of his alliance with the Macedonians. Nabis then defects to the Romans in the expectation of being able to hold on to his conquest.
The Battle of Cynoscephalae in Thessaly gives a Roman army under pro-consul Titus Quinctius Flamininus a decisive victory over Philip V of Macedon. The terms of the peace proposed by the Roman general and adopted by the Roman Senate specify that Philip V can retain his throne and control of Macedonia, but he has to abandon all the Greek cities he has conquered. Philip also has to provide to the Romans 1,000 talents as indemnity, surrender most of his fleet and provide hostages, including his younger son, Demetrius, who are to be held in Rome.
Rome's allies in Greece, the Achaean League, are displeased that Philip V is allowed to retain his kingdom as they want Macedonia to be dismantled completely.
Antiochus III occupies parts of the kingdom of Pergamum and a number of Greek cities in Anatolia.
Egypt
The Egyptian King, Ptolemy V, fights rebels in the Nile Delta, exhibiting great cruelty toward those of their leaders who capitulate.
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Deaths
Attalus I Soter, ruler of Pergamum from 241 BC, who has taken on the title of king after about 230 BC. Through his military and diplomatic skills, he has created a powerful kingdom in Anatolia (b. 269 BC)
