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I think, the invention is clock.
Thanks to it, our life is very comfortable.
Such as someone could keep their's promise, others could cook and etc..
I don't know that who invented it. So, I found that who invented that.
Gnomon of an ancient Babylonia invented clock in B.C4000
So, His invention brought about many changing. And then, Someone invented his invention again and again.
So, thanks to inveted clock continously, people life have being become very comfortable. |
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