Answer:
Not every one shared in the economic prosperity of this period. Many workers were typically unemployed for at least part of the year, and their wages were relatively low when they did work. This situation led many workers to support and join labor unions. Labor unions arose in the nineteenth century as increasing numbers of Americans took jobs in factories, mines, and mills in the growing industrial economy. Dangerous working conditions, long hours, and concern over wages and child labor contributed to the growth of labor unions