The invention that significantly facilitated communication during the Age of Enlightenment was the printing press. Innovated in the 15th century by Johannes Gutenberg, the printing press allowed for the mass production of books, pamphlets, and newspapers, leading to an information revolution. This technology enabled the rapid dissemination of Enlightenment ideas, such as reason, science, and individual rights. It played a vital role in promoting literacy, political discourse, and public debate, fostering a more informed citizenry. The widespread availability of printed materials helped articulate and spread revolutionary thoughts across Europe and beyond, paving the way for significant social and political changes.