Slaves had to work like freemen but freemen weren't owned. freemen when they worked they got money for their job and slaves didn't get paid at all. i don't know what example you want me to use
Dred scott’s owner fought for his freedom but lost
that’s the best i can do
Decline of rural living, but sparked tremendous amounts of economic growth eventually. Early urbanization was filthy though, no proper sewage, overcrowded cities. So many people surged into these urban areas at one time, often not finding enough jobs for everyone.
Article 1, sec. 8, of the constitution which gives congress the power to make all laws that are necessary & proper for carrying out its duties