History of the Constitution of the Roman Republic

The history of the Constitution of the Roman Republic is a study of the ancient Roman Republic that traces the progression of Roman political development from the founding of the Roman Republic in 509 BC until the founding of the Roman Empire in 27 BC. The constitutional history of the Roman Republic can be divided into five phases. The first phase began with the revolution which overthrew the Roman Kingdom in 509 BC, and the final phase ended with the revolution which overthrew the Roman Republic, and thus created the Roman Empire, in 27 BC. Throughout the history of the Republic, the constitutional evolution was driven by the struggle between the aristocracy and the ordinary citizens.

The Roman aristocracy was composed of a class of citizens called Patricians (Latin: patricii), while all other citizens were called Plebeians (Latin: plebs) . During the first phase of political development, the Patrician aristocracy dominated the state, and the Plebeians began seeking political rights. During the second phase, the Plebeians completely overthrew the Patrician aristocracy, and since the aristocracy was overthrown simply through alterations to the Roman law, this revolution was not violent. The third phase saw the emergence of a joint Patricio-Plebeian aristocracy, along with a dangerous military situation that helped to maintain internal stability within the Republic. The fourth phase began shortly after Rome's wars of expansion had ended, because without these wars, the factor that had ensured internal stability was removed. While the Plebeians sought to address their economic misfortune through the enactment of laws, the underlying problems were ultimately caused by the organization of society. The final phase began when Julius Caesar crossed the Rubicon river, and ended with the complete overthrow of the Republic. This final revolution triggered a wholesale reorganization of the constitution, and with it, the emergence of the Roman Empire.