Organized Government: Kings rued the first Greek communities, but by the Dark Ages, the nobles who own large farms, had taken the power from the kings; but it was a short amount of time of being ruled by the nobles; and their first challenge to their rule came from small farmers, who often needed money to live on until they could harvest and sell their crops to get their own money by trading; and some borrowed money from the nobles, promising to repay them by giving up their fields if couldn't pay back the money they owe the nobles; but then would have to work for the nobles; and if in desperate needs, some people would sell themsleves into slavery. By 650 B.C., the small farmers began to demand changes in the power structure, with the artisans and merchants, that wanted to participate and share in governing, behind them. Both groups became rich and wealthy off of their trade that they were doing between city-states. But since they didn't own property and land, they aren't citizens and couldn't have a say in running the polis. And with the people being unhappy led to tyrants, which is someone who takes power by force and rules with total power, control, and/or charge. By 500 B.C., tyrants had fallen off in Greece, and most city-states, anyway, became either a democracy, which is in a domocracy all citizens share in running the government, or some city-states became a oligarchy, which is only a few people hold power in running the government. Where in Greece, Sparta was a oligarchy and Athens was a democracy.