Prior to the decade of the 1960s, the middle class in America was strong and an important group of the United States population. These households benefitted from manufacturing jobs which brought relative wealth. However, after 1960, the effect of globalization made corporations move their factories overseas to places where production costs are lower. While this benefited these corporations, many of these middle-class households struggled as they were not able to get jobs that paid the same. As a result, the income increased, creating more inequality between social groups in the country.
