The significant invention Johannes Gutenberg created in the 15th century is the movable-type printing press. Developed around 1440, Gutenberg’s invention revolutionized the spread of information by allowing for the mass production of books and printed materials. Prior to this, texts were copied by hand, which was time-consuming and limited access to literacy. Gutenberg’s first major printed work, the Gutenberg Bible, showcased the press’s capabilities and set a precedent for future printing endeavors. This innovation played a crucial role in the Renaissance and Reformation by facilitating the dissemination of ideas, knowledge, and literature, ultimately transforming European society.