Final answer:
The profession of an overseer involves supervising and managing the work of others, particularly in the context of slavery or forced labor. Sub-overseers are assistants or subordinate overseers who report to the main overseer.
Step-by-step explanation:
In social studies, the profession of an overseer refers to a person who supervises and manages the work of others, typically in the context of slavery or forced labor. Sub-overseers, on the other hand, are assistants or subordinate overseers who report to the main overseer. They assist in overseeing the enslaved individuals and ensuring that they meet their assigned tasks.