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5 January, 05:33

Which of these was invented in the second industrial revolution? telephone steel telegraph steamboat?

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  1. 5 January, 05:53
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    In the second phase of industrial revolution, Telephone and new uses of steel were discovered. In the first phase of industrial revolution, Telegraph and steamboat were already introduced. Along with Telephone and new uses of steel, in second industrial revolution, assembly lines were introduced and also safer means of electricity such as bulbs were produced.
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