The document summarizes the history and geography of ancient Greece and its city-states. It describes how the mountainous terrain and proximity to the sea led the Greeks to develop a maritime culture focused on trade. It discusses the influential Minoan and Mycenaean civilizations, and how the polis system emerged in city-states like Athens and Sparta as Greece recovered from its Dark Ages. Sparta uniquely developed as a military state that enforced a rigorous martial code and closed society to maintain social control.