Factory size, economies of scale, and the great merger wave of 1898–1902

Analysis of census data reveals that the size of the average factory in the United States grew more rapidly during the 1870s and 1880s than during any subsequent decade through the 1920s. While the average factory doubled in size between 1869 and 1889, it increased by only about a quarter between 1899 and 1929. These results support the view that the reaping of economies of scale was not an important motive for the great merger wave.