What revolutionized human communication?

The invention of the printing press in the 15th century revolutionized human communication by enabling the mass production of written materials, making information more accessible to the general public. This innovation facilitated the spread of ideas, literacy, and education, ultimately contributing to significant social, political, and cultural transformations, including the Reformation and the Enlightenment. Additionally, advancements in technology, such as the telegraph, telephone, and the internet, have further transformed how people connect and share information globally.