·&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Global competition and the integration of labor markets through trade and outsourcing, which have eliminated jobs and depressed wages.
·&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 贸易和外包带来的全球劳动市场竞争和一体化减少了就业岗位，压低了工资。