Key Legislative Acts of the Progressive Era

During the Progressive Era, a wide array of reforms aimed to address issues stemming from industrialization, urbanization, and political corruption were enacted at local, state, and national levels. Key figures, including politicians, activists, and intellectuals, sought to promote social justice and government accountability, while also pushing for economic reforms.

Which of the following legislative acts was most directly aimed at regulating monopolies and promoting competition in the marketplace, reflecting the ideals of the Progressive movement?