Which form of transportation was MOST important to development west of the Mississippi River during the 19th century?

Considering "civil disobedience," which best describes how thoreau and martin luther king, jr. both felt about acts of civil disobedience? a. they both believed that acts of peaceful political protest would not affect or alter the law. b. they both believed that people should go against certain laws because government is a flawed concept. c. they both believed that individuals have the right and the responsibility to protest unjust laws. d. they both believed that breaking the law is an unjust action that deserves punishment. answer is c.