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A literature review is a critical analysis and summary of existing research on a particular topic. It involves synthesizing primary sources, such as scholarly articles and books, to identify trends, gaps, and conflicts in the literature. The purpose of a literature review is to provide an overview of the current state of knowledge on a subject, and to offer insights that can guide future research. In the context of academic writing, analytical writing, and writing processes, a literature review serves as a foundation for building arguments and developing new ideas. It allows writers to demonstrate their understanding of the field, establish their credibility, and identify areas where further investigation is needed.