This biography covers the life and career of Jack Dorsey, an influential American technology entrepreneur known for co-founding Twitter and Block, Inc. The text details his early life in St. Louis, his time as a college dropout, and his eventual rise to becoming a prominent billionaire in the tech industry. It documents his complex leadership history, including his resignation from Twitter and his focus on financial services and decentralized protocols like Bluesky. Beyond business, the source explores his philanthropic donations, his advocacy for Bitcoin, and his personal interests in meditation and politics. Finally, the entry provides a record of the a ...