In what year did the Roman Republic begin?

The Roman Republic began in 509 BC, marking a critical transition in Roman governance from monarchy to a system that emphasized a mix of aristocratic and democratic elements. The establishment of the Republic is traditionally attributed to the expulsion of the last king, Tarquin the Proud, which was a significant moment that represented the end of royal rule in Rome. This shift allowed for a governance structure that included elected officials, the Senate, and popular assemblies, laying the groundwork for Rome's expansion and influence.

Understanding this date is significant because it emphasizes the early development of political systems that influenced later governments, including concepts like representation and law. The other dates listed refer to different pivotal moments in Roman history, such as the end of the Republic and the fall of the Western Roman Empire, illustrating the broader timeline of Roman governance.