Complex sentence: In America "the romance... proved to be a serious, flexible, and successful medium for the exploration of philosophical ideas and attitudes", and notable examples include Nathaniel Hawthorne's "The Scarlet Letter", and Herman Melville's "Moby-Dick".
Split into simpler sentences: In America "the romance... proved to be a serious, flexible, and successful medium for the exploration of philosophical ideas and attitudes." Notable examples include Nathaniel Hawthorne's "The Scarlet Letter", and Herman Melville's "Moby-Dick".