The document discusses factors that led to changes in 20th century novels, known as the modern period in literature. It identifies 6 key factors: 1) World War 1 and its impact on writers, 2) new technologies that transformed society, 3) philosophical theorists who changed worldviews, 4) changes in politics and economics that fragmented individuals, 5) the evolving role of women, and 6) shifts away from traditional religion toward skepticism. In conclusion, it asks whether the modern period represented positive development or if the prior Victorian era is preferred.