A secondary source about industrialization in the 1800s would be a book or article that analyzes, interprets, or critiques the events and impacts of industrialization using primary sources as evidence. For example:
- A historical analysis book like "The Age of Revolution: 1789-1848" by Eric Hobsbawm, which discusses the broader social and economic changes of that period.
- An academic journal article that examines the effects of industrialization on society, workers, and the economy.
In contrast, a primary source would be a firsthand account from the time, such as a factory owner's diary, letters from workers, or government reports from that era.