The first invented transportation system was the wheel and axle .
One of the greatest inventions of the neolithic humans was the wheel with an axle .An axle is a shaft on which wheel rotates . The invention of axle allowed wheel to turn freely . It had various uses -
1) The potter's wheel was used to work clay to make better pots
2) Heavy objects could be transported in wheels
3)It improved transport and quickened the pace of development
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