...ced by this defeat to bring in Antigouus as an ally. Cleomenes had violated the peace which he had made with Antigonus and had openly acted in many ways contrary to treaty, especially in laying waste Megalopolis . So Antigonus crossed into the Peloponnesus and the Achaeans met Cleomenes at Sellasia. The Achaeans were victorious, the people of Sellasia were sold into slavery, and Lacedaemon itself was capture...