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Which of the following best explains a
connection between the economic
productivity of the United States in the mid-
1800s and in the late 1800s?
A. The application of new technologies
expanded large-scale industrial
manufacturing
B. Labor unions sought to improve
conditions in factories and wages for
workers.
C. The use of sharecropping in the South
expanded cotton agricultural production.
D. Corporations' need for managers fostered
the growth of a large middle class.