Bicycle is also named Bicyoletta in Latin, which means "quick" and "walker". The first bicycle appeared in 1815 in France, it had no bottom bracket or pedals. It rode like walking. In 1869, a frenchman put pedals on the front wheel, it rode much more easily, and the speed had been raised. IN 1890, a english doctor exchange the solid tires with the inflatable tires, which reduced the friction between the tires and the ground, it improved the speed again. Then with many years´ improvement, now you see the present bicycles.

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