In England in the 19th century, advances in printing methods, combined with the rise of a prosperous middle class, engendered a booming new industry of books published just for children. Casting about for cheap story material, English publishers laid hands on the subtle, sensual adult fairy tales of the Continental tradition and revised them into simpler stories instilled with Victorian values. Although these simplified versions retained much of the violence of the older stories, elements of sexuality and moral complexity were carefully scrubbed away -- along with the fiesty heroines who appeared everywhere in the older tales, tamed now into models of Victorian propiety and passivity. In the 20th century, the Walt Disney Studios watered down the tales further still in popular animated films like Sleeping Beauty and Snow White, continuing the trend of turning active heroines into powerless damsels in distress. Walt Disney considered even the Victorian versions of the tales too dark for 20th century audiences. Disney commented.