La roue a été inventée, pas très loin,par les Sumériens (Irak...),
il y a 6000 ans...Le mouvement permet de rester en équilibre...
Un grand merci à eux!
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Yellow Hats is a leading developer of A-grade commercial, industrial and residential projects in USA. Since its foundation the company has doubled its turnover year on year, with its staff numbers swelling accordingly.