The process of industrialization changed the nature of work

The process of industrialization changed the nature of work, working conditions, and the composition of America's workforce. We analyze labor's struggle to organize, management's fierce resistance to their efforts, and the status of the American worker by the end of the nineteenth century. - Watch the video about “Labor ‘struggle” : https://www.youtube.com/watch?v=6G1M4LHDNkk&t=136s Questions: Why this specific lesson is of the most important to teach a class about American History in the second half of the Nineteenth Century and early Twentieth Century? Why do you believe this is the most critical information for students to learn?