Cleomenean War
…Under the leadership of king Cleomenes III, Sparta initially had the upper hand, which forced the Achaean League to call for help the Macedonian king Antigonos Doson, who decisively defeated Cleomenes in the battle of Sellasia in 222. In 235 BC, Cleomenes III (r. 235–222 BC) ascended the throne of Sparta and began…