The territory of Greece is mountainous, and as a result, ancient Greece consisted of many smaller regions, each with its own dialect, cultural peculiarities, and identity. Regionalism and regional conflicts were prominent features of ancient Greece. Cities tended to be located in valleys between mountains, or on coastal plains, and dominated a certain area around them.
Boys went to school at the age of seven, or went to the barracks, if they lived in Sparta. The three types of teachings were: grammatistes for arithmetic, kitharistes for music and dancing, and Paedotribae for sports.
While slave conditions varied widely, the institution served to sustain the incomes of the free citizenry: an estimate of economic development drawn from the latter (or derived from urban incomes alone) is therefore likely to overstate the true overall level despite widespread evidence for high living standards.
At least in the Archaic Period, the fragmentary nature of ancient Greece, with many competing city-states, increased the frequency of conflict but conversely limited the scale of warfare. Unable to maintain professional armies, the city-states relied on their own citizens to fight. This inevitably reduced the potential duration of campaigns, as citizens would need to return to their own professions (especially in the case of, for example, farmers). Campaigns would therefore often be restricted to summer. When battles occurred, they were usually set piece and intended to be decisive. Casualties were slight compared to later battles, rarely amounting to more than five percent of the losing side, but the slain often included the most prominent citizens and generals who led from the front.
Athens owned one of the largest war fleets in ancient Greece. It had over 200 triremes each powered by 170 oarsmen who were seated in 3 rows on each side of the ship. The city could afford such a large fleet—it had over 34,000 oarsmen—because it owned a lot of silver mines that were worked by slaves."the fixed stars and the Sun remain unmoved, while the Earth revolves about the Sun on the circumference of a circle"