Why was there a labor surplus in the US?

The labor surplus in the U.S. can be attributed to several factors, including technological advancements that increased automation, leading to a reduced need for manual labor. Additionally, economic shifts, such as globalization and outsourcing, have contributed to job losses in certain sectors while increasing competition for available jobs. Furthermore, demographic changes, such as a growing workforce and higher unemployment rates during economic downturns, have exacerbated the surplus. These factors combined have created a situation where the number of job seekers surpasses the available positions.