An example of a secondary source would be

What is the connection among sectionalism,slavery,and states’right as causes of the civil war? how did the southern response to the 1860 election results demonstrate this connection

How was the government that was created at the constitutional convention similar to the one proposed in the virginia plan?

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.