1. (b) John Maynard Keynes for more answers vist to: https://www.tiwariacademy.com/ncert-solutions/class-10/social-science/history/chapter-1/

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  2. (c) 1929 for more answers vist to: https://www.tiwariacademy.com/ncert-solutions/class-10/social-science/history/chapter-1/

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  3. (b) Modern industrial war. for more answers vist to: https://www.tiwariacademy.com/ncert-solutions/class-10/social-science/history/chapter-1/

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