Answer:
Middle
Step-by-step explanation:
Nathan most likely to attend a school in the middle colonies because his family were business oriented and him also being trained to take over his family business by enrolling him into a private school which is known for teaching accounting.
The middle colonies are located in between the New England colonies and the Southern colonies, They are mainly into business because they are endowed with much fertile soil, which caused them to become a major exporter of some farm produce which includes wheat, lumber e.t.c.