when was bicyle invented

来源：学生作业帮编辑：拍题作业网作业帮分类：英语作业时间：2024/05/21 08:44:46

The bicycle,as we know it today,has had many transformations throughout the course of history.A starting point would be with the Frenchman Sivrac,who invented the celefere in 1790.This was a running machine which had two wheels one behind the other,and the athlete propelled him or herself along with his feet.Up until then most models had had four wheels.In 1817,a German baron,Karl Von Drais,added a steering device to the front wheel ,which allowed the rider to maintain his or her balance on it.The use of this kind of hobby horse became a real fashion amongst the upper classes of France,Germany,England and America.

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