Mythology is basically stories that Greek people made about their gods and that's what they think happened.
The Trojan war is a made up story and that basically where two cities get into a war because two prince and princess loved each other and so one night the princess escaped but the princess was already about to get married so the king who was gonna marry the princess made a horse and then left in front of the enemy's house and when the brought the great big horse inside the enemies jumped from inside the horse killed every one then took the princess back and then married her.
Every Greek town had a acropolis an acropolis is where the people of that Greek town when they got attacked they would run up that steep hill so that the bad guys wouldn't get to them and kill them.
This library was a big library many children,mathematicians, Philosophers, and many other people went to go read their because there were so many books from great people who took notes from there studies and wrote into a book or just put the notes in the library until it was destroyed and burned.
He created the first steam engine and he was mathematician and with out his invention we wouldn't even have any idea of what a engine even is.