Answer:
The modern era has seen the rise of powerful imperial states, while the post-classical era was characterized by smaller city-states. The modern era is characterized by global exchange of ideas and goods, while this kind of exchange was mostly regional during the post-classical era. D. Cultures are more isolated and distinct in the modern era, while classical cultures around the world shared many more characteristics. D. Goods are exchanged on a local level during the modern era, whereas global trade was more prominent in the classical era.
Explanation:
