Why would a researcher use a primary source instead of a secondary source when analyzing a a historical event

On the graph, the bottom horizontal line represents

What impact did company towns have on working conditions? company towns were ideal places to live because of the cheap prices of company stores. entertainment value in company towns made them attractions for those in rural areas. education provided by company towns workers to progress in the company. conditions in some towns indebted workers to trap them in the labor system.

What is this is a type of criminal charge that, while illegal is generally considered less serious. these can include things like trespassing, public indoxication, and vandalism.