Answer:
She made this comparison because women had very long hours, very hard work, and very low wages.
Explanation:
Hi. From the context of your question, we can see that you are referring to Sarah Bagley's article on how female employees were treated during the early days of industrial work. Sarah compared the situation of female employees to slavery. She made this comparison because the women's working hours were very strict and very long, in addition, they received a very small salary. At that time, women worked from 5 am to 7 pm.