Mark Zuckerberg created Facebook in 2004 while he was a student at Harvard. It quickly grew in popularity and now has over 800 million users worldwide. Facebook allows users to connect with friends, share photos and videos, join groups, and share their opinions. While Facebook is useful for staying connected, privacy has become a growing concern for users as more personal information is shared on the platform. Facebook has had a major impact globally, with high usage rates among younger people in countries like Chile and Venezuela.