Latest / The History of Germany: Kingdoms, War, and Rebuilding Europe — Fexingo History / The Zollverein: How Customs Union United Germany
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- Lucas: So you know how we've talked a lot about Bismarck and wars to unify Germany—the Franco-Prussian War, the Austro-Prussian War. But there's a quieter engine that did most of the heavy lifting long before the battles. It's called the Zollverein—the German Customs Union—and it started in 1834, decades before the Reich existed. Luna: A customs union? Like, removing tariffs between states? Lucas: Exactly. But it wasn't just about trade. It was about creating a common economic space that made political unity feel natural. Before the Zollverein, traveling from Berlin to Munich meant crossing dozens of borders, each with its own tolls, weights, measures, even currencies. Some German states had over sixty different tariff zones inside their own territory. Luna: Sixty? That sounds like a nightmare for merchants. Lucas: It was. A shipment of cloth from Saxony to Baden might be stopped and taxed a dozen times. That's what Prussia wanted to fix. In 1818, Prussia passed a tariff law—the Prussian Tariff Act—that abolished all internal customs within its own territory and set a single external tariff. It was radical for its time. The architect was a civil servant named Friedrich von Motz, who became finance minister. He saw that economic integration could be a tool for Prussian leadership. Luna: So Prussia basically said, 'Join our club or stay fragmented.' Lucas: Exactly. And they made it attractive. By 1828, Prussia had formed a customs union with Hesse-Darmstadt. Then in 1829, they signed a treaty with Bavaria and Württemberg. But the real breakthrough came in 1834, when the German Customs Union—the Zollverein—officially launched. It initially included 18 states, covering about 23 million people. And it wasn't just about tariffs—they standardized weights, measures, and even the shape of barrels. Luna: That's incredibly practical. Who opposed it? Lucas: Austria, for one. The Habsburg Empire saw the Zollverein as a direct threat. Metternich, who we've talked about before, tried to create a rival customs union in the south, but it failed. Austria's industries were less competitive, and they relied on high tariffs to protect their own markets. They couldn't join the Zollverein without abandoning their protectionist system. So they stayed out—and that economic isolation eventually weakened their political influence in Germany. Luna: So the Zollverein was also a way to sideline Austria. Lucas: It was, though that might not have been the original intent. Over time, the Zollverein became a vehicle for Prussian dominance. The customs union collected tariffs centrally and then distributed the revenue among member states in proportion to population—which favored larger states like Prussia. Smaller states found themselves increasingly dependent on Prussia for their budgets. And the union also required members to adopt Prussian commercial law. Luna: That's a lot of soft power. Lucas: Absolutely. And there's one more key figure: Friedrich List. He was an economist and a nationalist who promoted the idea of a unified German railway network. He argued that railways and the Zollverein together would 'bind the German people together in a common bond of interest.' List was a bit of a radical—he spent time in exile in the United States, where he saw how a unified market could drive growth. He wrote a book called 'The National System of Political Economy' that argued for protective tariffs to nurture infant industries, but within a unified German market. Luna: List's ideas sound like the intellectual backbone of the Zollverein. Lucas: They were. And he pushed for a national railway from Leipzig to Dresden, which became a reality in 1839. Railways and the Zollverein fed each other—railways made the customs union practical, and the customs union made railways profitable. By the 1840s, the Zollverein had expanded to include almost all German states except Austria. It had its own currency—the Vereinsthaler, a standard silver coin—and its own postal system in some areas. Luna: Wait, so they had a common currency decades before unification? Lucas: Yes. The Vereinsthaler was introduced in 1857 and became the standard coin across the Zollverein. It wasn't a full monetary union—states still issued their own coins—but the Vereinsthaler was accepted everywhere, like an early euro. This made trade much simpler. And it created a sense of shared economic identity. People started thinking of themselves as part of a larger German economy, not just Prussians or Bavarians. Luna: So by the time Bismarck came along, the economic groundwork was already laid. Lucas: Exactly. Bismarck didn't create the unified German state from scratch—he just put the political capstone on an edifice that the Zollverein had been building for forty years. When the North German Confederation formed in 1867, it was essentially a political extension of the Zollverein. And when the German Empire was proclaimed in 1871, the customs union simply became the Reich's internal market. Luna: It's almost like the economic union made the political union inevitable. Lucas: That's the argument many historians make. The Zollverein didn't cause unification by itself, but it created the conditions where unification seemed natural and beneficial to most Germans. It aligned interests, built infrastructure, and habituated people to thinking in terms of a shared German space. And it did all of that without firing a single shot. Luna: I never realized how much of German history happened through trade agreements rather than treaties. Lucas: It's a reminder that nations aren't just built by wars and diplomacy—they're built by merchants, engineers, and bureaucrats who just want to move goods more efficiently. The Zollverein is one of the most successful examples of economic integration in history. It's worth remembering that sometimes the quietest forces are the most transformative.