The transfer of plants, animals, people, and diseases between hemispheres. This would be the correct answer!!!
I'd say its A, because after wars things start to decline.
I hope this is right and helped you out.
Answer:
True
Explanation:
You can limit what information is shown to the public, but you can't lie
Civil War killed off slavery and declined the southern economy it also acted as a catalyst to make America into a complex industrial society of capital, technology, national organizations, and large corporations.