Which group made the most economical gain during the progressive era?

During the Progressive Era, which spanned from the 1890s to the 1920s, middle-class reformers and business interests, particularly large corporations, made significant economic gains. The era saw the rise of consumer culture, increased industrialization, and the expansion of the middle class, which benefited from new technologies and improved living standards. Additionally, certain labor unions and organized workers also achieved gains in wages and working conditions, although these were often overshadowed by the profits of large businesses. Overall, the economic landscape was shaped by a combination of reform efforts and corporate interests, with the latter ultimately reaping the most substantial benefits.