In what way did the early days of industrialization affect the working class?

Growing overseas trade, economic prosperity, and a climate for progress affected the working class.
Cities grew speedily, therefore there have been no development plans, healthful codes, or building codes. It cause inadequate housing, education and enforcement. Garbage heaped within the streets. Folks lived in shut quarters and caused diseases to unfold faster. The typical lifetime in urban areas was seventeen (38 in rural areas).

Primary sources are usually  more accurate and are written by someone who experienced it or witnessed it. secondary sources are those who heard of it after the fact that can lose details and or twist the event in a light that benefits them.