An argumentative essay requires a writer to defend a position on a topic using evidence from various sources to support their viewpoint. It is important to research multiple sides of an issue when preparing to write an argumentative essay. The structure typically includes an introduction with a thesis statement, body paragraphs with supporting details and explanations, a counterargument paragraph, and a conclusion that restates the main points. Body paragraphs should each contain a topic sentence, supporting details, an explanation, and a conclusion or transition to the next paragraph. A counterargument acknowledges an opposing view before the writer rebuts it. The conclusion restates the topic, thesis, addresses other viewpoints, and sometimes suggests future action.