This is the way you should organize your timeline. Use one card for each topic.
1) Minoans and Myceneans 2) The Trojan War 3) The Dorian Age 4) The City-States 5) Founding Democracy 6) Greco-Persian Wars 7) The Golden Age 8) Peloponnesian War 9) The Philosophers 10) Alexander the Great 11) Hellenism