It helped the US economy grow, because it gave the US more of a reason to industrialize like the British. The US needed to mass produce guns and ammunition in order to recreate their military. The mass production of products led to the Industrial Revolution years later.
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16 provinces... And 50 сity
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the American Indians
they were forced to move away from the railroad despite it running through Indian Territory. The workers often killed buffalo for meat, and the track itself disrupted the Plains Indian's buffalo hunting.