Postmodernism emerged in the late 20th century as a departure from modernism, characterized by a distrust of grand theories and ideologies. It began as a reaction against modernism in the 1970s, rejecting dogma and principles of established modernism. The term was first used in the late 19th century in various fields like painting and religion to describe changes beyond previous movements. Postmodernism applies to many artistic and literary movements that reacted against tendencies of modernism under capitalism. Postmodern literature relies on techniques like fragmentation and uses unreliable narrators.