The Interstate Commerce Act was passed to a. end the cattle boom. b. place Native Americans on reservations. c. regulate railroad rates and practices. d. tax business profits made in interstate trade.

The correct answer is C

The Interstate Commerce Act was a US federal law enacted in 1887 to limit the monopolistic practices that had emerged within the railroad industry. It was the first law that was issued in the US to regulate a private industry. The act stated that the rates charged should be "reasonable and just" but the goverment avoided to establish a specific fare. Shipping rates had to be published as well.