I think it is A
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B.F. Skinner would have attributed Alan’s rapid speech
development mainly because of the amount of his parents is talking to him in
which this led to the reason why Alan has developed a vocabulary of a dozen of
words by the 10 months of age.
I would have to say during the industrial revolution. Many new inventions were being made and America started taxing goods being shipped to other countries. To remove taxes from certain countries, they moved factories to other countries so avoid Tariffs. It wasn't the colonization of America because America wasn't a country yet. It wasn't the reconstruction or world war 2 because the factories were already there from the industrial revolution.
Hope I helped!
Many people argue on the fall of Rome.
Some people thought it was destroyed by other countries mainly Greece.
Others believe it was too powerful and could not control so it fell by losing power.
The fall of Rome is still unknown.