History
The Silver Flood: How Potosí Changed the World Economy
A mountain of silver in Bolivia funded empires, birthed global trade, and caused Europe's first sustained inflation — the Price Revolution.
In 1545, Spanish conquistadors confirmed what locals already knew: the mountain of Potosí, in what is now Bolivia, was full of silver. Over the next two centuries it produced an estimated 40,000 tons — the largest single source of silver in world history.
The consequences reached everywhere. Potosí silver paid Spanish armies in the Netherlands, bought Chinese silk and porcelain via Manila galleons, and quietly rewired the price level of an entire continent.
The Price Revolution: Europe's first long inflation
Between about 1500 and 1650, prices across Europe roughly quadrupled — modest by modern standards, around 1–1.5% a year, but unprecedented in a world where prices had been stable for generations. Historians call it the Price Revolution.
The cause was debated even then: more silver chasing the same goods. Wages lagged behind prices, so laborers grew poorer while landlords and merchants who could raise rents and prices grew richer — a pattern every later inflation would repeat.
Pieces of eight: the first global currency
The Spanish silver dollar — the peso de ocho, or 'piece of eight' — became the world's first truly global money. It was legal tender in the United States until 1857, gave the US dollar its name and its '$' sign, and was chopped into eight 'bits' for change (hence 'two bits' for a quarter).
The human cost
Potosí's wealth was extracted through the mita, a forced-labor draft of Indigenous workers, and later African enslaved labor in the mercury mines of Huancavelica that refined the ore. Mortality was so severe that contemporaries described the mountain as a mouth that swallowed men. The city's fabulous wealth and its suffering were the same fact.
Why it matters now
The Price Revolution was the first demonstration, at continental scale, that expanding the money supply raises prices — four centuries before central banks made it policy. Spain learned the other half of the lesson: windfall wealth that isn't invested productively flows straight through. Despite the silver, Spain declared bankruptcy repeatedly.