Good morning. Today we're going to discuss the history of the bicycle. The first two-wheeled vehicle, called the 'draisine', was invented in 1817 by a German baron. It had no pedals; riders pushed their feet against the ground. In the 1860s, pedals were added to the front wheel, leading to the 'boneshaker'. Later, the high-wheel bicycle became popular in the 1870s, but it was dangerous due to its large front wheel. Finally, in 1885, the 'safety bicycle' was introduced with a chain drive and two equal-sized wheels, which is similar to modern bicycles.