What accounts for the great outburst of major inventions in early America—breakthroughs such as the telegraph, the steamboat and the weaving machine?
是什么导致了早期美国例如电报、蒸汽船和织布机的重大发明的大量涌现？
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But the machine quickly moved into the garden with the railway, the world-shrinking telegraph, grid-straight roads, farm boundaries and industrialised agriculture.
Although the telegraph has since been replaced by the even more convenient telephone, fax machine and Internet, its invention stands as a turning point in world history.