Below are given some sentences out of which the sentence numbered 4 has been correctly placed. The rest of the sentences A, B, C, D, E, F need to be arranged correctly in order to form a logical order.

A. After the domestication of animals, men started carrying heavier loads by dragging wood planks with the help of animals.

B. In ancient times, before the invention of the wheel, it was man himself who had to carry heavy loads over distances.

C. The world has become a ‘global village’ thanks to this invention as we can cover long distances in a short period of time.

4. The wheel was invented in 3500 BC in Mesopotamia, Iraq.

D. It is one of the biggest blessings for humanity since it allowed for modern transportation – from basic carts, cycles, motorcycles, and cars to trucks, trains, and planes.

E. It is arguably the greatest invention in human history.

F. Later, he began taming animals such as oxen, horses, donkeys, and camels to carry these loads.