Today we're going to discuss the history of the bicycle. In the early 19th century, the first two-wheeled vehicle, called a 'draisine', was invented by Karl von Drais. It had no pedals; riders pushed their feet against the ground. Later, in the 1860s, pedals were added to the front wheel, creating the 'velocipede'. However, this design was uncomfortable due to its rigid frame. The major breakthrough came in 1885 with the 'safety bicycle', which featured a chain drive and equal-sized wheels, making it much safer and faster. This design became the basis for modern bicycles.
❓ ¿Cuál fue la principal mejora de la bicicleta de seguridad introducida en 1885?
A. A. Tenía pedales unidos a la rueda delantera.
B. B. Usaba una transmisión por cadena y ruedas de igual tamaño.
C. C. Era más ligera y tenía un asiento más cómodo.
D. D. Podía plegarse para facilitar su almacenamiento.