This shows that Mary Beth has hold the contradictory class locations as she owns her own business or occupation. In the structure of the society each person belongs to a certain class and position which shows the status of that person in the society.
Wright, an American Marxist, argued that each mode of production is defined by fully polarizing certain basic social classes within the relevant social relations of production. Thus Mary Beth occupies contradictory class locations.
Are there any answer choices if not I would have to say the end of slavery changed the way slaves thought it allowed the slaves to be free and not have to work day and night on plantations and get whipped.