1. To provide an overview of existing research and knowledge on a particular topic. 2. To identify gaps in the current literature and areas for further research. 3. To establish the theoretical framework and context for a research study. 4. To demonstrate the significance and relevance of the research topic. 5. To help researchers avoid duplicating previous studies and build upon existing knowledge. 6. To provide a foundation for the development of research questions and hypotheses. 7. To support the methodology and data analysis techniques chosen for a research study. 8. To inform policy and practice by synthesizing and summarizing key findings from previous studies.