Good morning, everyone. Today we're going to discuss the history of the bicycle. As you may know, the first bicycle-like invention appeared in the early 19th century. However, it wasn't until the 1880s that the modern safety bicycle, with two equal-sized wheels and a chain drive, became popular. This design made cycling much safer and more accessible, especially for women, who began to use bicycles for leisure and transportation. Interestingly, the bicycle also played a significant role in the women's suffrage movement, as it symbolized freedom and independence.
❓ Theo bài giảng, điều gì đã làm cho xe đạp an toàn hiện đại trở nên phổ biến vào những năm 1880?
A. Khung xe nhẹ và lốp cao su
B. Hai bánh xe bằng nhau và bộ truyền động xích của nó