Which of the following describes an important contribution of classical greece? a. development of imperial governments based on strong central authority.
b. institution of civil service examinations for government officers.
c. creation of a system of philosophy based on logic and observation.
d. establishment of a religious system that had only one god.

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

the  seven  days  battles  were  a series of seven battles over seven  days from june 25 to july 1, 1862, near richmond, virginia,  during  the american civil war. the  seven  days ended with mcclellan's army in relative safety next to the james river, having suffered almost 16,000 casualtiesduring  the retreat.

the western roman empire flourished, but the eastern portion of the empire struggled.