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Examine the table and answer the question below.
Rail travel time, 1870-1900
Railroad companyRouteMileage1870 Elapsed time (hrs)1870 Speed (mph)1900 Elapsed time (hrs)1900 Speed (mph)
WabashChicago to St. Louis28613:4020.77:5136.4
NY CentralNew York to Chicago96138:3025.016:0038.4
-Source: Robert J. Gordon, economist, The Rise and Fall of American Growth: The U.S. Standard of Living since the Civil War, 2016.
Which of the following was a direct effect of the trend in railroad lines after 1870 shown in the table?
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