The 19th and 20th centuries are very rich about inventions that changed our lives. The automobile is one of those inventions changed people's lives. Short after its invention automobile became a necessity in daily life more than being luxury or a symbol of nobility. Today the numbers of cars are close to half of earth's population. Almost every family in developed countries owns a car. The automobile has had the greatest effects on our lives in last two hundred years because it is a necessity, it has an important effect on the world economy and it affects our lives directly.
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