After a two-year siege Sparta subdued Olynthus, whose power as the capital of the Chalcidian Confederacy had become threatening.
Citation:
Bouchard, Elsa. "War between Sparta and Olynthus".
The Literary Encyclopedia. First published 01 March 2010
[http://www.litencyc.com/php/stopics.php?rec=true&UID=11255, accessed 18 June 2013.]