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並前往https://www.bls.gov/opub/mlr/2017/article/history-of-child-labor-in-the-united-states-part-2-the-reform-movement.htm

History of child labor in the United States—part 2: the reform ...

Data from the 1870 census concerning the number of child laborers spurred the first widespread recognition of the problem. The public was starting to become ...

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