Today we're going to discuss the history of the bicycle. Although many people think of the bicycle as a relatively modern invention, its origins date back to the early 19th century. The first two-wheeled vehicle, called a 'draisine' or 'hobby horse', was invented by Karl von Drais in 1817. It had no pedals; riders pushed their feet against the ground to move. Later, in the 1860s, pedals were added to the front wheel, creating the 'velocipede'. However, this was uncomfortable due to its rigid frame. It wasn't until the 1880s that the 'safety bicycle' with a chain drive and two equal-sized wheels became popular, making cycling safer and more accessible to the general public.
❓ ¿Cuál fue una característica clave de la 'bicicleta de seguridad' introducida en la década de 1880?
A. No tenía pedales y se impulsaba con los pies.
B. Contaba con una transmisión por cadena y ruedas de igual tamaño.
C. Tenía una rueda delantera muy grande para la velocidad.
D. Fue el primer vehículo de dos ruedas jamás fabricado.