The Greek city-states emerged from the Dark Ages, a period of decline following the collapse of Mycenaean civilization. This era saw population decline, loss of writing systems, and reduced trade. Small, isolated communities focused on subsistence agriculture and oral traditions to preserve cultural heritage. The 8th century BCE marked a revival, with the rise of the polis as the fundamental political unit. These self-governing communities experimented with various forms of government, including monarchy, oligarchy, tyranny, and democracy. Economic growth, cultural renaissance, and military innovations shaped the Greek world.