Clive Day, A history of commerce (1922)
“ Growth of domestic manufactures.—Though the imports of manufactured wares increased greatly in the course of this period, it must not be assumed that the United States was as wholly dependent on foreign manufactures in 1860 as it had been in 1790. A population growing rapidly both in numbers and in welfare caused a demand for manufactures which stimulated some producers to choose manufacturing instead of farming for their livelihood, and the government aided these individuals by taxing imported wares, and so giving the domestic producer an advantage in the home market. ”
