Because the Greek city-states were weak and disorganized to unite after the Peloponnesian War.
Conditions before the Industrial Revolution were terrible. Child mortality was high and the children who survived, barely had enough to eat. You see, because of The Little Ice Age, agriculture was terrible. And before the revolution, most of Europe was agriculture based. The lack of food made people stunted and killed many. The food that could be harvested, were taxed and there was almost no profit.
I think it is B. Alexandria, Persia
