Editing 276 BC (section)

==== Egypt ====
* The [[Ancient Egypt|Egyptian]] King [[Ptolemy II Philadelphus|Ptolemy II's]] first wife, [[Arsinoe I of Egypt|Arsinoe I]] (daughter of the late King [[Lysimachus]] of [[Thrace]]) is accused, probably at instigation of Ptolemy II's sister (who also has the name [[Arsinoe II of Egypt|Arsinoe]]), of plotting his murder and is exiled by the King. Arsinoe then marries her own brother, a customary practice in Egypt, but scandalous to the Greeks. The suffix "Philadelphoi" ("Brother-Loving") consequently is added to the names of King Ptolemy II and Queen Arsinoe II. The former queen, Arsinoe I, is banished to [[Coptos]], a city of [[Upper Egypt]] near the [[Stone quarries of ancient Egypt|Wadi Hammamat]], while her rival adopts her children.
* The first of the [[Syrian Wars]] starts between Egypt's Ptolemy II and Seleucid emperor [[Antiochus I Soter]]. The Egyptians invade northern [[Syria]], but Antiochus defeats and repels his opponent's army.