In the 1870s _ began to investigate factory conditions new york jersey

The Bureau of Statistics and Labor in Massachusetts was the earliest and pace-setting organization among the nations. Their first yearly report in 1870 give a detailed accidents involving children working in a factory just like paper mills and textile mills and other big establishments. They sent investigators to all employers to notice surroundings and circumstances first-hand.
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Because broadest terms allows the law flexibility depending on changing society and circumstances.