Complex sentence: He was appointed first postmaster of the city under the Continental Congress, made (1776) surveyor general of the Continental Post Office, and in 1782, succeeded Richard Bache as the United States Postmaster General and served as such until 1789.
Split into simpler sentences: He was appointed first postmaster of the city under the Continental Congress. In 1776, he was made surveyor general of the Continental Post Office, and in 1782 he succeeded Richard Bache as the United States Postmaster General, serving as such until 1789.