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Invention of wheel
Man has made a great progress in life today because of many things.Agriculture,houses,shops,technologies etc.But the main invention was the wheel.Because of the wheel,today,transport is available through land,water and air.Roads and rails for land,ships for water and planes for air.The most common is road transport.Even in villages transport is available through carts pulled by ox and horses.See,what progress is made by the wheel!
By,
Aswathy Krishnan