Complex sentence: Scudder advised against trying a book at that time, and suggested Chesnutt wait until he earned a broader reputation; seven years later, he endorsed Chesnutt to Page, who had taken his role as editor of the "Atlantic".
Split into simpler sentences: Scudder advised against trying a book at that time, and suggested Chesnutt wait until he earned a broader reputation. Seven years later, Scudder endorsed Chesnutt to Page, who had taken his role as editor of the "Atlantic".