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Facebook Launched
"Zuckerberg launched "TheFacebook" with his friends (they eventually dropped "The" in 2005). In the beginning, only Harvard students were allowed to create profiles on the site. But later, the site expanded to allow students from other colleges, with its user count reaching one million by September 2004."
https://www.makeuseof.com/evolution-of-facebook/#:~:text=The%20Evolution%20of%20Facebook%3A%20From%202004%20to%20Meta,2022%20and%20Beyond%3A%20Layoffs%2C%20Chaos%2C%20and%20Recovery%20 -
Tagging on facebook
Tagging people on facebook is an important thing that was added. This allows you to tag people in pictures and any status that you would want people to see. -
Facebook Went Mobile
When facebook went mobile this would allow anyone ages 13 and older to join. -
Like Button Introduced
The like button was something that is very popular to this day. Most people try and post pictures and statuses for the popularity and the number of likes helps show that. -
Facebook Acquires Instagram
When facebook aquired instagram this allowed users to share one post on their instagram and facebook with just one click -
Facebook Reactions
Facebook reactions were introduced. This allows people to either laugh at a post that may be funny or heart a post that someone posted that is sad or happy.