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Human beings have invented many important things so far. They have brought great civilization to the world through these inventions. Do you know which invention is the greatest? It is 'the wheel'.
A wheel is a circular object. It can rotate around its axis and help easy movement of things across a surface.
The wheels are, in fact, everywhere. They are on our cars, trains, planes, wagons and so on. Besides, they are on most factory and farm equipment. Fans, propellers, turbines are also other types of wheels.
So the wheel is very important. We cannot imagine modern life without wheels. But do we know exactly who made the first wheel?
_______ is the greatest invention of human being.
আপনি আমাকে যেকোনো প্রশ্ন করতে পারেন, যেমনঃ
Are you sure to start over?
