Gustave Flaubert's 'Madame Bovary' is a novel published in 1856 that follows the life of Emma Bovary, a woman trapped in a mundane provincial life who seeks romance and excitement through extramarital affairs and materialism. The book is a cornerstone of the European novel, representing the shift towards realism in literature by focusing on the psychological depth of characters and social critique, especially the constraints placed on women in society.