Good morning, everyone. Today we're going to discuss the history of the bicycle. Now, many people assume the bicycle was invented in the 19th century, but in fact, the first two-wheeled vehicle, called a 'velocipede', appeared in 1817. It was made of wood and had no pedals; riders pushed their feet along the ground. Later, in the 1860s, pedals were added to the front wheel, and this design became known as the 'boneshaker' due to its uncomfortable ride. However, it wasn't until the 1880s that the chain-driven bicycle, similar to modern ones, was developed. So, when exactly did the pedal-less wooden bicycle first appear?