The Roman Emperor who turned an entire empire into citizens to appease the gods

Countries & Cities · Published 29 September 2026 Swipe more like this →

In short: Caracalla is remembered as a brutal tyrant who murdered his own brother, yet he also issued the Antonine Constitution. This sweeping edict granted Roman citizenship to nearly every free inhabitant of the empire. Was this a calculated move to boost tax revenue, or a desperate attempt to secure divine favor?

Born Lucius Septimius Bassianus in 188 AD, the man later known as Caracalla rose to power alongside his father, Septimius Severus, and his brother, Geta. Following his father's death in 211 AD, the fragile co-rule between the brothers collapsed. By December 211, Caracalla had Geta assassinated by the Praetorian Guard. He solidified his grip on power through a brutal damnatio memoriae, which saw an estimated 20,000 of Geta’s supporters and associates massacred, effectively erasing his brother from history.

In 212 AD, Caracalla issued the Constitutio Antoniniana, granting citizenship to all free inhabitants of the empire, excluding only the dediticii. While historians like Cassius Dio suggest the move was a fiscal maneuver to expand the tax base—specifically inheritance and emancipation taxes—to fund military pay raises, others argue it was a religious act. Caracalla believed he needed to appease the gods after the fratricide of his brother, and the edict served as a grand gesture of gratitude for his survival against perceived conspiracies.

Caracalla’s reign was defined by his obsession with the military and his emulation of Alexander the Great. He lavished the army with pay increases, raising the average legionary's salary from 500 to as much as 750 denarii. To fund this, he debased the currency, reducing the silver purity of the denarius from 55% to 51% and introducing the antoninianus. His erratic behavior, including the slaughter of Alexandrian citizens who mocked his claims of self-defense regarding Geta’s death, eventually led to his assassination in 217 AD by a soldier named Justin Martialis.

Despite his reputation as a tyrant, Caracalla left behind architectural marvels like the Baths of Caracalla, a massive complex covering 50 acres. His image as a rugged, scowling soldier-emperor marked a departure from the philosopher-emperors of the past, setting a new, aggressive archetype for future Roman rulers who relied heavily on the loyalty of their troops to maintain control.

General information, not professional advice. Spotted an error? Flag the card or see corrections and complaints.

Intellect Plus is a visual educational discovery platform for exploring fascinating facts and ideas. Brain Food, Not Brain Rot. What is Intellect Plus?

Related

• How a North African general transformed the Roman Empire into a military autocracy
• The Roman Emperor who never visited Rome and faced a total erasure of history
• Roman citizenship was a sophisticated political tool that transformed conquered enemies into loyal stakeholders.
• Rome's emperor Geta was erased from marble but survived on coins
• How Rome's first emperor rebranded absolute power as a sacred, humble service
• How a failed half-hour special became a Star Wars television adventure
• In some nations, consensual same-sex acts remain punishable by death under state law
• The ancient inns that powered global trade across Asia, Africa and Europe for centuries
• Capitals began as heads of power, not always the biggest towns
• The city that became a crossroads of coal, rail, and radicalism
• How a French IT giant became a lightning rod for US immigration policy
• Cardiff runs Welsh TV empires from a mid-sized capital

More in Cities · More in Countries & Cities · Latest · A–Z · All topics