Who invented the wheel?
The wheel was invented in the 4th century BC in Lower Mesopotamia(modern-day Iraq), where the Sumerian people inserted rotating axles into solid discs of wood. It was only in 2000 BC that the discs began to be hollowed out to make a lighter wheel. This innovation led to major advances in two main areas.
Why is it called a bicycle?
The term bicycle was coined in France in the 1860s, and the descriptive title “penny farthing”, used to describe an “ordinary bicycle”, is a 19th-century term.