The answer above is correct.
The railroads, in the U.S., helped move people westward.
C) Father of the U.S. national park system is the phrase which best describes John Muir. John Muir was a Scottish-American author who wrote many books which have been read by millions about his travels around the Sierra Nevada and wilderness areas based around California and the west coast. His writings helped to preserve these areas and the Sierra Club which he founded is a prominent conservation organization.
Is this a true or false question? If so, the answer is true!
