What are two ways that the information in the section titled "An Unexpected Effect" influences the passage as a whole? A. It explains how the canal established the best route for American superhighways and railways.
B. It illustrates the drive the canal created for the westward expansion of American society.
C. It emphasizes the role the canal has played in the development of American recreational resources.
D. It establishes the canal's influence on American culture beyond the merely commercial aspects.
E. It describes how the ideal utopian lifestyle spread along the canal and became the norm across America.