Lex Titia
The lex Titia was a Roman law passed on 27 November 43 BC that legalised the Second Triumvirate of Octavian, Mark Antony and Marcus Aemilius Lepidus for five years. The triumvirate established by the law was renewed in 38 BC. Unlike the First Triumvirate, which was a private arrangement among three men, the Second Triumvirate was a legal instrument, which vested the three men with dictatorial powers.
The Second Triumvirate, nominally a "three-man commission for restoring the constitution of the republic", was given the power to make or annul laws without the need for approval from the Senate or the people, insulated their judicial decisions from appeal and allowed the Triumvirs to name magistrates at will and manage state lands. Although the three members possessed the full powers of their office, unlike the normal republican magistracies, the triumvirs could not veto one another.
While the constitution of the Roman Republic was not dismantled by the lex Titia, it never recovered and, over the next two decades, would transform into the constitution of the Roman Empire. Certainly, it can be argued that in Roman constitutional theory, the law's passage was simply an exercise of the sovereign people's legislative authority. The passing of the lex Titia marked the de jure end of the Roman Republic, but in practice, it had already been repeatedly subverted by prior legislation, such as that conferring dictatorships on generals, such as Sulla and Julius Caesar.
