There were several features that helped industries grow quickly in the country after the Civil War. There was massive influx of immigrants and so there was no dearth of labor force. Also there was great improvement regarding new inventions and technological advancements. There was also great availability of raw materials like timber, oil etc.
Bartering would be correct.. all the others involve money
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I didn't understand you question, hence I am not able to avail you
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the Scientific Revolution aided the Industrial Revolution with the technology and innovations that were encouraged