Ancient Greece had two main city-states, Athens and Sparta, that differed in their values, governments, economies, and ways of life. Athens was a democracy located near the sea that depended on agriculture and tourism, while Sparta was an oligarchy on a plain between mountains and sea relying on agriculture and trade. Both city-states trained their boys from an early age to become soldiers to fight in wars such as the Peloponnesian war between Athens and Sparta.