A similarity between Evidence A and B is that both agree with how demand affected the use of slaves in the United Sates. Evidence A mentions that when the “demand for labor remained low”, only one of the sources—such as “colonial-born youth”—was enough to get the work done; this implies that when demand was low, so was slavery. Evidence B tells us that the “most profitable industry” in the United States was based on slavery; that “over half the value of all United States exports” was slave grown cotton. This fits with the argument of how demand affects slavery; since there was a high demand for cotton, slaves were used. However, despite both excerpts talking about how the economy affected who made up the workforce, Evidence A never directly
