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us history

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what is the worlds greatest invention???

  • us history - ,

    I would say electricty, heating and cooling, cell phone and, the Xbox 360 S

  • us history - ,

    I vote for electricity. Without electricity your other devices are not possible.

  • us history - ,

    Yeah, I didn't think about that. If we didn't have electricity we would be no where in the invention indurstry.

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