The "Printing Revolution" refers to the significant transformation in the production of books and written materials that began in the mid-15th century with the invention of the printing press by Johannes Gutenberg. This innovation allowed for the mass production of texts, making literature and information more accessible to the general public, which previously relied on hand-copied manuscripts. As a result of the Printing Revolution, literacy rates increased, and the spread of ideas accelerated, contributing to major cultural movements such as the Renaissance and the Reformation. The availability of printed materials fostered greater communication and exchange of knowledge, shaping modern society and education.