What does this testimony demonstrate? the belief that modern industry cannot succeed unless employees work long hours
the desire of labor leaders to achieve a shorter workday for all workers
the competition between the Knights of Labor and the American Federation of Labor
a lack of concern by some labor leaders for the conditions of unskilled labor

The service industry in the united states grew in the late 1800s. what was one effect of that growth? the number of people with jobs in factories as unskilled workers decreased. the number of people with jobs in factories as unskilled workers increased. the middle class grew as people took jobs as clerks, lawyers, and teachers. the middle class shrank as people left jobs as clerks, lawyers, and teachers.