What was one effect on the american middle class because of the change in manufacturing jobs between 1975 and 2015?

The middle class had fewer well-paying jobs, and the wage gap between the wealthy and middle class increased. Even though some manufacturing jobs returned to the United States in the 2010s, they were not the same well-paying jobs in the previous decades. The global workforce and advances in technology allowed companies to offer lower pay and fewer benefits to manufacturing workers. So, even when the manufacturing jobs returned, the wage gap persisted.

hey i did something like that before, what is the quesiton?

result of the incas claiming exclusive right over numerous traditional routes, some of which had been constructed centuries earlier mostly by the wari empire