Which nonfiction genre involves true accounts of only past periods or events historical self-help journalism how to genres

The nonfiction genre that involves true accounts of only past periods or events is historical genre.

The nonfiction genre that involves true accounts of only past periods or events is called "historical genre." This genre focuses on documenting and analyzing past periods, events, and individuals that are significant in history. It aims to provide factual information and interpretations about historical events to the readers. It is different from self-help, journalism, and how-to genres, which have their own distinct characteristics and purposes.