NEW YORK, Feb 7 (Reuters) - A British writer has written a book based on Jane Austen's classic novel "Pride and Prejudice" but told from the servants' point of view, its U.S. publisher said on Thursday. In "Longbourn," which will be released later this year in the United States, writer Jo Baker focuses on a romance between the main characters, a newly arrived footman and a housemaid on the Bennet family estate.