The "History of the World" reference on CD-Rom by DK Multimedia is an educational software that provides a comprehensive collection of encyclopedias and dictionaries related to history. This CD is compatible with Microsoft Windows 3.x, 98, and 95 operating systems, making it easily accessible for a wide range of users. With this pre-owned CD, users can explore various historical topics and reference materials at their convenience, making it a valuable resource for both students and educators.