Question

During the twentieth century, the real income of blue-collar workers in western societies __________ overall, although it has ______________ in the past 20 years

Answer 1

During the twentieth century, the real income of blue-collar workers in western societies increased significantly overall, although it has dropped in the past 20 years. 
White-collar workers went to work in factories instead of going to farming, and within a few years created the new industrial working class of America. Workingin factories was a difficult transition for rural people who were accustomed to living in communities where life was controlled by the hours of available daylight and the natural rhythm of the seasons.