Good morning, everyone. Today we're going to discuss the history of the bicycle. Now, you might think the bicycle was invented in the 19th century, but actually, the first known two-wheeled vehicle, called the 'Draisine' or 'hobby horse', appeared in 1817. It was invented by a German baron, Karl von Drais. However, it had no pedals; riders pushed themselves along with their feet. Later, in the 1860s, pedals were added to the front wheel in France, creating the 'velocipede'. But it was heavy and uncomfortable. The major breakthrough came in 1885 when John Kemp Starley introduced the 'Rover', which had a chain drive to the rear wheel and equal-sized wheels. This design became the basis for modern bicycles. Now, let's consider its impact on society...