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Personally, I think it is the printing press. It opened up a world of information that dramatically changed societies.
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I would have to say that the best invention that man has ever made is the typewriter otherwise we would never have made it to the computer and so on. if not the typewriter then the telephone.
The best invention man has ever made is the internet. Nowadays, we know its power and benefits.
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Copyright © 2017 HubPages Inc. and respective owners.