Kyros

… The weakening of centralism, which had been brewing under Darius II, became evident during the reign of Artaxerxes II. He defeated the army of his brother Cyrus, who was seeking the throne, in 401 BC, but was unable to restore Egypt, which had fallen from his father's hands in the final years of his reign, and suffered from rebellions by the satraps of the western provinces during the final decade of his reign. Egypt remained independent for over 60 years, after which it was reconquered by Artaxerxes III. …

*Some of the terminology that mentions "Kyros" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…　中央集権体制の弱体化はダレイオス2世のもとに醸成され，アルタクセルクセス2世の時代に明らかになった。彼は前401年に王位をねらう弟キュロスKyrosの軍を破ったが，父王末年に離反したエジプトを回復することができず，治世末期の約10年間は西部諸州のサトラップの反乱に苦しんだ。エジプトは60年余り自立を続けたのち，アルタクセルクセス3世によって再征服された。…

※「Kyros」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報