Which time period in u. s. history since 1750 has seen the greatest advancement in organized labor? explain

Organized labor in the United States saw the greatest advancement in the late 19th century as a reaction to poor working conditions developed during the Industrial Revolution. The emergence of factories led to unhealthy  working conditions. The lack of standards on work hours, employee compensation, and medical coverage left many workers vulnerable.

Organized labor is a workers association that aims to improve working conditions through collective bargaining with employers, and was one of the steps that established standards for acceptable working conditions

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