Complex sentence: John L. Hacker was born on May 24,1877, John worked many years by attending night school and through correspondence to become an accredited marine designer while working at his fathers business as a book-keeper.
Split into simpler sentences: John L. Hacker was born on May 24,1877. He worked many years by attending night school and through correspondence to become an accredited marine designer while working at his fathers business as a book-keeper.