On which day did the World Wide Web go online?
Explanation
The World Wide Web went online on December 20, 1990. This significant milestone occurred when British computer scientist Sir Tim Berners-Lee and his colleague Robert Cailliau successfully implemented the first web server and web browser communication over the internet. Their creation marked the birth of the World Wide Web, a system that revolutionized information sharing and connectivity on a global scale. The web's debut on December 20, 1990, paved the way for the digital age, enabling the widespread dissemination of information and transforming various aspects of our lives.