Answer:
accountant, banking agent, member of Dabney firm
Step-by-step explanation:
He began his career in 1857 as an accountant with the New York banking firm of Duncan
In 1861 Morgan became the agent for his father’s banking company in New York City.
During 1864–71 he was a member of the firm of Dabney, Morgan and Company, and in 1871 he became a partner in the New York City firm of Drexel, Morgan and Company