There were many groups because the Empire was located at the crossroads of the continents. That's why its culture was influenced by both western cultures such as the Greek and Roman ones, but also by eastern ones such as Turks, Persians, Arabs, Egyptians, and similar.
I'm pretty sure the answer for this is:
C. A philosophy of government that advocates for a strong central government
Hope this helps! :D
The monsoons come each season on a regular pattern.
Answer: A something that is owned to anyone through just claim or legal guarantee.