The significant technological advancement in the 20th century that facilitated global communication was the internet. Emerging in the latter half of the century, the internet revolutionized how people connect, share information, and conduct business worldwide. It provided a platform for instant communication across vast distances, thus shrinking the world in terms of accessibility. The development of the World Wide Web in the early 1990s made online information accessible to the general public, leading to significant changes in various sectors, including education, commerce, and social interaction, ultimately reshaping how society functions.