The True Economic History of Columbus’s Voyage of Discovery
Columbus Day might prompt some reflection for those critical of Donald Trump’s trade policies.
The narrative often spun by Trump’s critics and self-proclaimed “free-traders” is that Europe’s encounter with the Americas and the subsequent surge in international trade relied heavily on the removal of trade barriers—like tariffs and monopolies—along with cooperation between nations. However, economic history paints a contrasting picture.
A 2002 study in the Journal of Economic History by Kevin O’Rourke from Trinity College Dublin and Jeffrey Williamson from Harvard revealed that commerce prospered in a global market heavily influenced by significant economic obstacles and interventions, ranging from import duties and taxes to wars and piracy.
These challenges were substantial. If trade barriers were lessening during this era, we would ideally expect a consistent reduction in price disparities across continents. Yet, O’Rourke and Williamson discovered that these price gaps remained persistent. In fact, they were so pronounced that they seemed to overshadow advancements in shipping technology.
By analyzing import prices alongside the income levels of Europeans purchasing foreign goods, the researchers concluded that increasing demand contributed to approximately half to two-thirds of the trade increase. The sixteenth century was characterized by overseas supply dominance, while the growth in European consumer demand drove the trade boom in the seventeenth century. As wealthier Europeans spent more on spices, silk, and sugar, merchants had ample reason to undertake the risk of expensive voyages. This growing purchasing power of their customers fostered trade, even under conditions that would likely shock modern trade policy experts.
Ultimately, this situation can be viewed as a notable success for market forces. Government policies and rampant piracy did manage to maintain high price differentials but didn’t prevent the expansion of global trade. It suggests that governments can achieve significant public objectives—such as protecting critical industries—through trade policies that would induce panic among today’s free-trade advocates, all while still allowing citizens to enjoy the benefits of trade.
The Establishment’s Liberation Day Panic
This discussion matters because the critics of Trump’s trade policies often present a narrow view of international commerce. Their argument tends to imply that there are only two options: either we sign the latest multilateral trade agreement, like the Trans-Pacific Partnership, or we risk economic isolation. The refrain goes that imposing tariffs would cut off imports entirely and ignite destructive trade wars. Without “globalism,” we wouldn’t even have burritos or pizza.
Yet, the real economic history following Columbus’s voyages contradicts this line of thinking.
We witnessed the fallout from the globalist trade perspective when President Trump announced his tariff policy. In April of the previous year, the World Trade Organization warned that these changes, along with retaliatory measures from trade partners, could lead to a 0.2 percent decline in global merchandise trade volumes—almost three points lower than their earlier estimates. A pessimistic scenario predicted a 1.5 percent drop.
Surprisingly, global trade volumes increased by around four percent afterward, U.S. imports rose, and the WTO now anticipates a 3.9 percent growth in global merchandise trade this year.
Meanwhile, tariff collections surpassed expectations, with customs duties reaching $195 billion in fiscal 2025, a significant increase from the $77 billion collected the year before. Notably, fiscal year 2025 concluded in September 2025, just a short time after the tariffs were introduced. Many tariffs were in effect for an even shorter duration. The Congressional Budget Office credited almost all of the $118 billion rise in revenue to the administration’s tariff initiatives. Trump successfully generated additional revenue from international trade, despite the predicted downturn failing to materialize.
Additionally, there was a surge in U.S. manufacturing output and productivity. The labor market experienced a rebound in manufacturing jobs, reversing a trend observed during the end of Biden’s presidency. Business investments flourished, and new manufacturing plants continued to be established, even after Biden’s subsidies ended.
One reason trade proved more resilient than anticipated is due to businesses investing in AI infrastructure, significantly increasing orders for semiconductors, servers, and related equipment, far exceeding gloomy forecasts. Trade in AI-related goods saw a rise of 21.9 percent in value in 2025, contributing to 42 percent of the overall increase in global merchandise trade value.
This was facilitated by the Trump administration’s tariffs, which maintained access to crucial computing technology while still generating revenue from other imports. Acknowledging the ongoing dependence on imports for many high-tech items, the administration took a practical stance to support—rather than hinder—the AI boom.
In essence, free-trade advocates misjudged the resilience of private demand and the market’s ability to adapt to tariffs. Much like in the post-Columbus era, market dynamics proved more significant. It’s somewhat ironic that many individuals claiming to champion free trade consistently underestimate market forces. Those who express the highest confidence in the power of markets have, paradoxically, spent the last couple of years suggesting that a customs bill could cripple them. One can’t help but wonder whether they genuinely advocate for trade and free markets or simply serve the interests of those who benefited from trade arrangements established before Trump took office.
Indeed, while tariffs can increase import prices and may lead some merchants to shift production domestically, lucrative investment opportunities keep businesses purchasing and suppliers competitive. As we commemorate Columbus Day, we should consider how the expansion of trade over centuries—often through perilous voyages—serves as a stark reminder of the strength of these incentives.
