Which best describes the relationship between the developments of steam power and the railroad? a. steam power was great britain's most significant contribution to the industrial revolution, while the railroad was france's. b. the development of steam power launch the industrial revolution, while the invention of the railroad brought it to an end. c. steam power launch the industrial revolution, and the railroad allowed the industrial revolution to continue to grow. d. both steam power and the railroad start the industrial revolution, but were replaced by more advanced technologies.