Ineed which statement provides the best evidence to support the conclusion that the growth of the railroad industry revolutionized "big business" in america in the late 1800's? a) the completion of the transcontinental railroad in 1889 linked the eastern and western halves of the nation. b) the growth of the railroad industry and "big business" led to increased immigration from central and southern europe. c) during the late 1800's, the growth of "big business" and the expansion of the railroad industry occurred completely independently of one another.