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.
B. The combination of industries led to new inventions and innovations such as the Internal combustion engine and the Electric Lightbulb.
Explanation:
This one sounds the most correct for me because these new inventions and innovations allowed more industries to be build to help create these new objects.
