This was a law created in 1887 to regulate railroads to ensure fair rates, eliminate rate discrimination, and regulate other aspects of common carriers. (hint; first two letters start with: in)

Who ever answers first gets ! trade in the vedic age led to a.the rise of kingdoms because of the importance of controlling land and long-distance travel routes b.the building of an extensive system of roads because of the difficult terrain c.the creation of a large banking class because of the need to exchange different currencies d.the development of a centralized government that controlled the economic decisions of its people