It gave further power to the Interstate Commerce Commission.
The Mann-Elkins Act continued the federal government's authority to regulate railroad rates and telecommunication and expanded the power of the government to regulate telephone, radio, and telegraph companies.
The Mann-Elkins Act was passed in 1910 during the Progressive Era. The act was passed as part of a series of laws to regulate segments of the economy. During the Gilded Age the government passed regulation over the railroads and communications giving the government the power to set prices and prevent gouging of industries needing those services to survive. In the 1910 act, the government was provided the power to regulate the companies owning telephone, telegraph, and radio services.
The Louisiana Purchase treaty is an important document in the study of Manifest Destiny because it shows the extent to which the United States was claiming land westward. The correct answer is D.
