1. (a) The spinning jenny for more answers vist to: https://www.tiwariacademy.com/ncert-solutions/class-10/social-science/

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  2. (b) James Hargreaves for more answers vist to: https://www.tiwariacademy.com/ncert-solutions/class-10/social-science/

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  3. (b) James Watt for more answers vist to: https://www.tiwariacademy.com/ncert-solutions/class-10/social-science/

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  4. (b) in 1730s for more answers vist to: https://www.tiwariacademy.com/ncert-solutions/class-10/social-science/

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