Megatrends was a very popular book form the 1980's that attempted to make predictions about the future.
Many people considered this as a, "mainstream book."
Although the Greek city states all spoke the same language and worshipped the same gods, each polis had their own government systems and values. Athens and Sparta, in particular had opposing values; Athens had a democracy, Sparta had a monarchy, where Athenians prized new ideas, the Spartans stubbornly clung on to the traditional etc. Partially due to Pericles taking advantage of the Delian League to benefit Athens, other city states began to resent Athens and eventually the Greek city states sided with either Sparta or Athens in the Peloponnesian War.
I think B but I'm not sure if this is right. We are learning about this now (Im in 6th) in Social Studies. I hope I helped!
Toussaint L'Ouverture fought with Jean-Jacques Dessalines.