A long time ago, poeple used to belive and worship Myth. There were more than 1 Myth. They called Myth god.Zeus, Athens, Hedes, and Posidon had there own power and responsibility. Some poeple still believe at Myth still.
It was used for religious, military. With out this, could be ruled by some country. Every Greek town at high place and builiding and go up up to culture.
Before Aristarchus came, poeple thought the sun was going around the world. He knew the Earth went around the sun. He used a telescope to see the out side world.
Alexander concuored a lots of land. Thats why we call him great.He knew knowledge and spread Greek knowledge. He even beat the Persian Empire
Liberty of Alexanderia is a liberary that spread knowledge. It was form the Greek that spreaded the knowledge.