What did greeks contribute to the history of the western civilization

The Ancient Greek contributed major things to western civilization. For instance, the philosophy of Socrates, Plato and Aristotle. Or literature like Homer's' Iliad and The Odyssey. Government styles like democracy were invented. History was recorded by Herodotus and Thucydides. Architecture like the Parthenon and sculpture of the perfect human body. Painting was also a big factor in Ancient Greece as well as mathematics. Elucid invented Geometry, Algebra and the Number Theory.

The answer to apex is the development of the first mathematical system of perspective