The Greek 'Dark Age' drew to a close as a significant rise in population allowed urbanized culture to be restored, and the rise of the city-states (Poleis). These developments usher in the Archaic period (800-480 BC). They also restored the capability of organized warfare between these Poleis (as opposed to small-scale raids to acquire livestock and grain, for example). The fractious nature of Ancient Greek society seems to have made continuous conflict on this larger scale inevitable.