The first tweet in Twitter history was sent on March 21, 2006 by Jack Dorsey, one of the platform's co-founders. The tweet said: "just setting up my twttr." It was a simple but significant phrase, since it marked the beginning of one of the most influential and popular social networks in the world today.
Twitter was conceived as a platform for sharing short, quick updates, limited to 140 characters in its early years. Its initial goal was to allow people to share what they were doing at any given moment, and tweets became a quick and concise form of communication.
Over the years, Twitter has evolved and broadened its focus, becoming a platform where people share not only personal updates, but also news, opinions, links, images and videos. It has been used for political debates, social movements, awareness campaigns and as a tool to follow events in real time.
Jack Dorsey's original tweet has become a symbolic milestone in Twitter history and has endured as an important moment in the platform's development. As Twitter has grown and evolved, the 140 character limitation has been expanded to 280 characters in most cases, allowing users to express themselves more broadly, although brevity remains one of Twitter's main features.