It helped because it enabled other fronts to open up because the American Offensive in the area ended with a victory, which meant that they could move to other areas and bother Germans there. They didn't' do this however because the fighting ended since the Germans became aware of their losses and signed an armistice.
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Alexander Graham Bell was a Scottish-born inventor, scientist, and engineer who is credited with patenting the first practical telephone.
It caused the civil war. The industrial revolution in the North, during the first few decades of the 19th century, brought about a machine age economy that relied on wage laborers, not slaves.
