Three reasons for the industrial growth of the United States are:
1. Population growth: The great increase in population in the nineteenth and twentieth century was due to a high rate of growth, but above all, to European immigration, which began in the 1820s and increased in successive decades, reaching its peak in the 10 years before the First World War. Between 1820 and 1920, 25 million immigrants settled, coming from Northern, Eastern, and Southern Europe.
2. Technological innovation: The manufacture of final goods gave advantages to the North American production of machine tools, which was, in turn, one of the factors that drove the industrial advance in the century XIX and XX. The competitiveness of American industry was not only the product of technological innovation but also of organizational innovation. In the first decades of the nineteenth century, the "American system" spread beyond its borders and served as a model for the organization of large European industrial companies.
3. Regional development: Industrial development flourished in the northeast region, which maintained supremacy throughout the nineteenth century and the first decades of the twentieth century. The first industrial zone was New England, the main center of development of the textile and mechanical industries until the decade of 1860. In this stage, New England was the most populated urban area and the one that had better commercial and financial services. The other two great regions of the territory, the south, and the west were, in essence, agricultural producers. Both supplying the industries and the populations of the northeast, and they were consumer markets for the industrial production of the north.
