Answer:
Creation of a system of philosophy based on logic and observation ( C )
Explanation:
The Classical Greece created a system of Philosophy based on Logic and observation. The Greece Nation can boost of having some of the best philosophers of all times like Aristotle and others who were very good at their philosophy works.
These philosophers created their philosophies based on Logic and Observation and this was what Made Classical Greece different form other Nations at that time. the People of Greece were also known as good warriors