What limited fertile land forced Greeks to use this for a living?

The limited fertile land in Greece, primarily confined to small valleys and coastal plains due to the mountainous terrain, compelled the Greeks to adopt a lifestyle centered around agriculture and trade. They cultivated essential crops like olives and grapes, which thrived in the region's climate. Additionally, the scarcity of arable land encouraged the Greeks to engage in maritime trade and establish colonies, allowing them to access resources and expand their economic opportunities. This reliance on trade and agriculture shaped their culture and society significantly.