Complex sentence: After leaving his job at Scribner's, Burlingame authored 25 books, including biographies and works of historical non-fiction about science, war, and industrial growth in the US.
Split into simpler sentences: After leaving his job at Scribner's, Burlingame authored 25 books, including biographies and works of historical non-fiction. Burlingame's books discussed science, war, and industrial growth in the US.