In at least 100 words, compare two sub-categories of american romantic literature. use details from the passages to support your response.

American Romanticism, except precedents like William Cullen Bryant, provided a great writer and poet, Edgar Allan Poe, precursor of one of the fundamental currents of Post-Romanticism, Symbolism, renovator of the Gothic narrative and creator of the detective story, and James Fenimore Cooper (disciple of the historical novels of Scott), whose great subject is the novel of pioneers. It can be considered a post-romantic to the most original anarchist thinker Henry David Thoreau, introducer of ideas ahead of his time such as nonviolence and environmentalism, author of Walden or Life in the woods and the famous essay On Civil Disobedience. In the United States there is also talk of a group of essayists under the name of Transcendentalism that includes Ralph Waldo Emerson and Thoreau.