The Roman Republic existed from 509 BC to 27 BC.
Notes on verification
Five independent authoritative sources (Britannica, World Atlas, World History Edu, Rome.net, and Digital Maps of the Ancient World) all confirm identical dates of 509 BC to 27 BC with complete agreement on both the founding and end dates of the Roman Republic.
Sources
- Ancient Rome (wikipedia)
- https://www.britannica.com/place/Roman-Republic (corroboration)
- https://www.worldatlas.com/articles/the-roman-republic-509-bce-to-27-bce.html (corroboration)
- https://worldhistoryedu.com/what-was-the-roman-republic-c-509-27-bc-history-and-major-facts/ (corroboration)
- https://www.rome.net/roman-republic (corroboration)
- https://digitalmapsoftheancientworld.com/ancient-history/history-ancient-rome/the-roman-republic-509-27-bc/ (corroboration)