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.
Socii
Because of the poverty of the sources, only the bare outline of Rome's external relations in the early period can be reliably discerned. It appears likely that Rome in the period 550–500, conventionally known as the period it was ruled by the Tarquin dynasty, established its hegemony over its Latin neighbours. The fall of the Roman monarchy was followed by a war with the Latins, who probably took advantage of the political turmoil in Rome to attempt to regain their independence. This war was brought to an end in 493 BC by the conclusion of a treaty called "foedus Cassianum", which lay the foundations for the Roman military alliance. According to the sources, this was a bilateral treaty between the Romans and the Latins. It provided for a perpetual peace between the two parties; a defensive alliance by which the parties pledged mutual assistance in case of attack; a promise not to aid or allow passage to each other's enemies; the equal division of spoils of war (half to Rome, half to the other Latins) and provisions to regulate trade between the parties. In addition, the treaty may have provided for the Latin armed forces levied under the treaty to be led by a Roman commander. These terms served as the basic template for Rome's treaties with all the other Italian "socii" acquired over the succeeding two centuries.