What type of document provides a detailed review of a particular legal subject?

A treatise is a comprehensive written work that provides an in-depth analysis of a specific legal subject. It is often authored by legal scholars or practitioners and includes thorough discussions of legal principles, precedents, interpretations, and critiques. Treatises are considered authoritative resources for understanding complex legal topics, making them invaluable for legal research, education, and practice.

In contrast, a memorandum is typically a more concise document that summarizes legal issues, analysis, and conclusions relevant to a specific case or situation, often used for internal guidance or communication among legal professionals. An affidavit is a sworn statement of fact, often used as evidence in court, but it does not provide a review or analysis of legal subjects. A brief is a document presented to a court, outlining legal arguments and supporting case law pertinent to a specific case, but it lacks the broader, comprehensive scope of a treatise.