Meri saheli magazine in hindi published this article page no 50 from the beginning of civilisation human beings have tried to increase their capacity and power. at first they were using equipment made of wood or rocks but with the advancement of science they explored modern and efficient equipment and this process is going on. machines are one of the greatest inventions of humans. industrial revolutions have a huge impact on our society and they also affect the world economy meri saheli magazine buy.
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