New technologies like steam engines, railroads, and telegraphs made for communication and transportation easier. The ability to source and transport materials across the country with ease turned many local businesses into national companies.
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Any subject of study needs justification: its advocates must explain why it is worth ... In the past history has been justified for reasons we would no longer accept. ... History should be studied because it is essential to individuals and to society, and ... Only through studying history can we grasp how things change
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Check the first and third one
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