Monday 24th October 2016

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Infographic: Currency and the collapse of the Roman Empire

by Jeff Desjardins | posted with permission of Visual Capitalist

The Money Project is an ongoing collaboration between Visual Capitalist and Texas Precious Metals that seeks to use intuitive visualizations to explore the origins, nature and use of money.

Infographic: Currency and the collapse of the Roman Empire


At its peak, the Roman Empire held up to 130 million people over a span of 1.5 million square miles.

Rome had conquered much of the known world. The empire built 50,000 miles of roads, as well as many aqueducts, amphitheatres and other works that are still in use today.

Our alphabet, calendar, languages, literature and architecture borrow much from the Romans. Even concepts of Roman justice still stand tall, such as being innocent until proven guilty.

How could such a powerful empire collapse?

The Roman economy

Trade was vital to Rome. It was trade that allowed a wide variety of goods to be imported into its borders: beef, grains, glassware, iron, lead, leather, marble, olive oil, perfumes, purple dye, silk, silver, spices, timber, tin and wine.

Trade generated vast wealth for the citizens of Rome. However, the city of Rome itself had only one million people and costs kept rising as the empire became larger.

Administrative, logistic and military costs kept adding up, and the empire found creative new ways to pay for things.

Along with other factors, this led to hyperinflation, a fractured economy, localization of trade, heavy taxes and a financial crisis that crippled Rome.

Roman debasement

The major silver coin used during the first 220 years of the empire was the denarius.

This coin, between the size of a modern nickel and dime, was worth approximately a day’s wages for a skilled labourer or craftsman. During the first days of the empire, these coins were of high purity, holding about 4.5 grams of pure silver.

However, with a finite supply of silver and gold entering the empire, Roman spending was limited by the amount of denarii that could be minted.

This made financing the pet projects of emperors challenging. How was the newest war, thermae, palace or circus to be paid for?

Roman officials found a way to work around this. By decreasing the purity of their coinage, they were able to make more “silver” coins with the same face value. With more coins in circulation, the government could spend more. And so the content of silver dropped over the years.

By the time of Marcus Aurelius, the denarius was only about 75% silver. Caracalla tried a different method of debasement. He introduced the “double denarius,” which was worth twice the denarius in face value. However, it had only the weight of 1.5 denarii. By the time of Gallienus, the coins had barely 5% silver. Each coin had a bronze core with a thin coating of silver. The shine quickly wore off to reveal the poor quality underneath.

The consequences

The real effects of debasement took time to materialize.

Adding more coins of poorer quality into circulation did not help increase prosperity—it just transferred wealth away from the people, and it meant that more coins were needed to pay for goods and services.

Nobody should have any money but I, so that I may bestow it upon the soldiers.—Caracalla, who raised soldiers’ pay by 50% circa 210 AD

At times, there was runaway inflation in the empire. For example, soldiers demanded far higher wages as the quality of coins diminished.

By 265 AD, when there was only 0.5% silver left in a denarius, prices skyrocketed 1,000% across the Roman Empire. Only barbarian mercenaries were to be paid in gold.

The effects

With soaring logistical and administrative costs and no precious metals left to plunder from enemies, the Romans levied more and more taxes against the people to sustain the Empire.

Hyperinflation, soaring taxes and worthless money created a trifecta that dissolved much of Rome’s trade. The economy was paralyzed.

By the end of the third century, any trade that was left was mostly local, using inefficient barter methods instead of any meaningful medium of exchange.

The collapse

During the crisis of the third century (235 to 284 AD), there may have been more than 50 emperors. Most of them were murdered or killed in battle.

The empire was in a free-for-all and it split into three separate states.

Constant civil wars meant the empire’s borders were vulnerable. Trade networks disintegrated and such activities became too dangerous.

Barbarian invasions came in from every direction. Plague was rampant.

And so the western Roman Empire would cease to exist by 476 AD.

About the Money Project
The Money Project aims to use intuitive visualizations to explore ideas around the very concept of money itself. Founded in 2015 by Visual Capitalist and Texas Precious Metals, the Money Project will look at the evolving nature of money and will try to answer the difficult questions that prevent us from truly understanding the role that money plays in finance, investments and accumulating wealth.

Posted with permission of Visual Capitalist.

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