What civilization
They can devlope leaks.They can devlope leaks.
bill
"This Invention" - what invention? You don't mention one.
It was developed in Japan,
hariyana
yes becasue he wanted a moving picture
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The Nile did
socail change
They re important because they helped devlope civilization
Yes. The idea of the 'flying invention' of Da Vinci influenced the helicopter.
Probably the wheel, along with the axle.