Task: Text Categorization
Input (English): This territory's Eurypontid dynasty included Agesilaus II, who was one of the commanders at the second Battle of Mantinea. That dynasty included several rulers named Archidamus. This city-state practically ceased to exist following the loss of its ruler Cleomenes III at the Battle of Sellasia to the forces of an Achaean League. The law-giver of this city-state was Lycurgus. Another ruler of this city-state was Leonidas, who died at the Battle of Thermopylae. For 10 points, name this Greek city-state that fought Athens in the Peloponnesian War.
Output (English): History