Answer: B - They run their countries in their own best interest.
Explanation: Dictators have absolute control over their country and do not have any checks or balances to make sure they are promoting the welfare of their citizens. So, because of that I have to say it cannot be A or B because dictators don’t have an obligation to server their people and I don’t think it’s D because many dictators don’t establish a successor.
These typically are "Demographics" descriptors.
Military conflict in and around the middle east
I believe the answer is: They are based on the arbitrary borders of old European empires
African continent was colonized by different european empire. To avoid conflicts among the european, they divided africa into several territories and dtermine which country has the jurisdiction over each territories. After African nations gained independence, they still use this separation as borders to differentiate one country with another.