Final answer:
In the late 1800s, factory workers formed unions to address their mistreatment and working conditions.
Step-by-step explanation:
In the late 1800s, many factory workers formed unions to address their mistreatment and working conditions. They faced long hours, low wages, dangerous working conditions, and lack of job security. By forming unions, workers could collectively bargain for better wages, shorter workdays, improved safety measures, and job stability.
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