ABSTRACT
The twentieth century saw the US move toward industrial supremacy. US population was growing rapidly, without impeding economic growth. There was rapid growth in new industries like petrol, aluminum and nitrogen. But more commonly, all know this as the era of mass production, symbolized first and foremost by the growth of the automobile industry. In 1900, the US automobile industry was classified under 'miscellaneous' industries by the US Census Bureau. By 1925, it was ranked first by value added. In 1929, the industry accounted for 12.7 per cent of US manufacturing output, and General Motors had become the third largest US industrial corporation. Smithian growth was probably the main reason for the impressive performance of the US automobile industry. After all, by the 1920s, the US car industry was already by far the biggest in the world. Infrastructure developments had fueled growth.
