Julius Caesar

Rise to power

Born to a patrician family that had fallen on hard times, Caesar built alliances and reputation through oratory, legal work and military service. He joined the informal alliance later called the First Triumvirate, a political partnership with Pompey and Crassus that dominated Roman politics for several years. When that alliance collapsed, tensions led to a civil war between Caesar and his former ally Pompey.

Military campaigns and rule

Caesar's conquest of Gaul extended Roman control over much of western Europe and made him fabulously powerful. His army's loyalty enabled him to cross the Rubicon and march on Rome, a decisive act that ended the old republican order. Victorious in the civil conflict, he was appointed dictator, ultimately for life, and used extraordinary authority to enact reforms in governance, debt, citizenship and the calendar.

Reforms and writings

• Administrative reforms to centralize and streamline government.
• Social and economic measures addressing debt and veterans' settlement.
• Calendar reform producing the basis of the Julian calendar.
• Literary works, notably commentaries on the Gallic Wars and civil war, written in clear Latin prose.

His public power and reforms alarmed many senators. On 15 March 44 BC he was assassinated in the Theatre of Pompey in Rome, an event that provoked further civil wars and ultimately led to the rise of the imperial system under his adopted heir Augustus.

Legacy

Caesar's name became a title: later Roman and medieval rulers styled themselves Kaiser and Tsar, derived from Caesar. His military innovations, literary style and political example have been studied continuously since antiquity; he remains a touchstone for discussions of leadership, reform and the transition from republic to empire.