I think is A Monarchy system?
I believe it is D.
Because barter system. Like it kinda explains its self.
In the period between 650 C. E. and 1750 C. E. , the Indian Ocean region endured both change and continuity. One continuity is simply trade, for this 1,100 years the Indian ocean was an important trading zone. One change in Indian ocean trade over those years was which country dominated trade their.
Answer: Nationalism
Nationalism is identification with one's own nation and support for its interests, especially to the exclusion or detriment of the interests of other nations.