TOEFL Listening: TPO-TOEFL听力TPO - U2ZPQFZ_P2WK4X57R$

What is the lecture mainly about? A. Ways that new managerial techniques hastened the industrialization of American society in the nineteenth century B. Ways that the United States government tried to regulate business practices in the nineteenth century C. Reasons that business leaders gained political power in the late nineteenth-century United States D. A comparison of the management styles of Andrew Carnegie and John D. Rockefeller