Which of the following factors contributed to the rise of the middle class during the industrial revolution

From the changes of the growth in industry, people moved to the cities and got works in the factories, because of the invention of new technology during the revolution, and which became the working class. As well as the growing of factories, many factory owners became wealthier or upper-middle class.

the answer is a. laws were enacted in the aftermath of the plot to make it harder to free slaves,increasing sectionalism