Slavery has always been a source of cheap labor which shows its economic aspects, and discrimination against slaves/blacks have always been a problem which shows its social relations in the Old South. Slavery affected the lives and freedoms of blacks and whites in completely opposite ways. For blacks, freedom was to not be a slave. For whites, part of their freedom and liberty was the ability to own their own slaves; its something they looked forward to, unless, of course, they were abolitionists.
I hope this helps!
Good day to you.
-Niko