Expository writing is meant to explain or inform, and it is a common writing style for essays. To show a specific point regarding the issue at hand, the writer must first establish a topic, detail the proof, then further clarify the notion. Expository essays often begin with a question that leads into the explanation of the answer or discussion of the subject matter. They are written on a variety of topics, but most commonly focus on issues such as history, politics, culture, and current events. Although narrative essays can also deal with contemporary subjects, an expository essay is usually presented in a formal tone, devoid of personal opinion. For example, an author could discuss how government policies affect economic growth, but would not express an opinion on the merits of those policies; instead they would present the facts only, allowing the reader to make their own judgment. Expository essays are used to convey information about a broad range of topics. The writer begins with a question that leads into a detailed explanation of the answer or discussion of the subject matter. Because they require research, they should be used when you want to give your audience new knowledge or insights about your topic. Often, these types of essays are required in college courses. In order to meet the standard set by the professor, students have to search for other ways to write their essays.