Archival data is a type of data that has been collected and stored for future reference or research purposes. This data typically includes documents, records, and other artifacts that have been preserved over time. Researchers use archival data to study historical events, trends, and patterns, as well as to gain insights into past behaviors, cultures, and societies. Archival data is often rich in detail and can provide valuable information for a wide range of academic disciplines, including history, sociology, anthropology, and political science. Researchers may access archival data through libraries, museums, government agencies, and other repositories that specialize in preserving and managing historical materials.