Complex sentence: The 19th century saw the novel become the leading form of literature in English, with the works by pre-Victorian writers such as Jane Austen and Walter Scott perfecting both closely observed social satire and ripping adventure stories.
Split into simpler sentences: The 19th century saw the novel become the leading form of literature in English. The works by pre-Victorian writers such as Jane Austen and Walter Scott had perfected both closely-observed social satire and adventure stories.