what were the new machines of industrial World (plzz answer for this question for 5 mark)
(Social Science NCERT 10th Age of Industrialisation)
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The technological changes included the following: (1) the use of new basic materials, chiefly iron and steel, (2) the use of new energy sources, including both fuels and motive power, such as coal, the steam engine, electricity, petroleum, and the internal-combustion engine, (3) the invention of new machines,
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