Under mercantilism, a nations's wealth was measured by the amount of GOLD AND SILVER it possessed.
After the revolution, the practice of enslaving African Americans was illegal.
To see if they are trying to provide bias or persuade or be one-sided in their claims. Also to know what was their purpose of providing the evidence was for. The author put in the time and effort to create the source so what was his end goal to accomplish for the reader.