Between 1922 and 1929, the American economy experienced a massive boom which saw the average income expand by 27% and the annual wealth produced by 40%. These years became known as the Roaring Twenties. The boom happened for a number of reasons such as the introduction of assembly lines, the start of radio, and an increased demand for radio sets, and increased share prices. The single factor which contributed more to the boom than anything was the motor industry. …showed first 75 words of 526 total…

…showed last 75 words of 526 total…They could visit amusement parks which sprang up alongside the newly built roads or spend whole days driving in their cars, simply because they could. There was, or course, a darker side to all of this. With more and more cars on the road, and more and more roads being built, the potential for accidents increased, as did the accident rate – dramatically. By 1930, 10,000,000,000 people were being killed on the roads every 5 seconds. (incorrect info) Mat.