 In the early United States, the Hamiltonian economic program, specifically the third report and the "magnum opus" of Alexander Hamilton, the "Report on Manufactures", advocated for the U.S. to become self-sufficient in manufactured goods.This formed the basis of the American School in economics, which was an influential force in the United States during its 19th-century industrialization.Werner Baer contends that all countries that have industrialized after the United Kingdom went through a stage of ISI, in which the large part of investment in industry was directed to replace imports (Baer, pp.