The answer to that question is Walter Rauschenbusch
the Industrial revolution was the boom of factories to produce products such as clothes. The factories main use was cotton. When the demand for cotton increased the more cotton was needed to be produced in turn making agriculture rise slightly. Everyone benefited except the slaves. Another effect was the poor working conditions in the factory that led to a working class revolution
I have no idea what book or story you are talking about, but based on my knowledge of Law... asking a person the same question over and over and cause a reaction in their fight or flight extinct, the person will start to become worried and they'll either start changing their answer or they'll break down completely. I'm guessing the when Hathorne asked the same question several times to Sarah, she started to get nervous.
I hope this kinda helped
Answer:
Keeping control of the border states played an important role in the victory for the Union. These states gave the Union the advantage in troops, factories, and money.