Good morning, everyone. Today we're going to discuss the history of the bicycle. Now, many people think the bicycle was invented in the 19th century, but its origins actually go back further. The first two-wheeled vehicle, called a draisine, was created by a German baron in 1817. It had no pedals, so riders pushed their feet against the ground to move. Later, in the 1860s, pedals were added to the front wheel, creating the 'boneshaker'. However, it wasn't until the 1880s that the modern chain-driven bicycle appeared, making rides much smoother and safer. So, the key innovation for today's bicycle was the chain drive, not the pedals.
❓ What was the main innovation that led to the modern bicycle?