Get one of those photo scanner apps and then I can read it and help you
War industry was a major endeavor, massive both in terms of scale and costs involved. New technologies, munitions, weapons had to made and designed. This meant there was a need for massive number of new workers and subsequently a need for new houses where the workers would live. That was the difficulty that the industry had to face.
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Answer: It showed that progress was being made in defeating the South, and it helped persuade Union voters to re-elect Lincoln as President.
