Lesson Plan: The Five Billion

A teaching companion to the Time Rhymes story on the Franco-Prussian indemnity of 1871-1873, the Gründerkrach of May-September 1873, and China's $1.2 trillion 2025 trade surplus and $3.4 trillion foreign-exchange reserves. Designed for upper-secondary or first-year undergraduate use in a course on economic history, international macroeconomics, or contemporary China.

Learning objectives

By the end of this lesson, students will be able to:

1. Reconstruct the chronology of the Treaty of Frankfurt (1871) indemnity and France's repayment in full by September 1873.

1. Explain the Gründerzeit speculative boom in Germany and Austria-Hungary 1871-1873 and the Vienna and Berlin stock-exchange crashes that ended it.

1. Compare the structural absorption problem facing Germany in 1871-1873 with the structural absorption problem facing China since 2001, focusing on the difference in scale, time, and institutional readiness.

1. Evaluate whether China is in 2026 in a position structurally analogous to Germany in 1872, or whether the comparison breaks down.

Section 1: The Treaty of Frankfurt and the indemnity

The Franco-Prussian War ended on 10 May 1871 with the Treaty of Frankfurt. France ceded Alsace-Lorraine (Alsace and the Moselle department of Lorraine, including the iron-ore basin), accepted German occupation until the indemnity was paid, and agreed to pay the new German Empire five billion gold francs by March 1875.

Discussion:

• The five-billion-franc indemnity was approximately 25% of French GDP and roughly twice the entire German federal budget for the previous three years combined. Why was the figure set so high? Compare with the Spanish indemnity demanded by France after Vitoria (1813), the Allied indemnity demanded of France after 1815, and the German reparations demanded after 1919.

• The indemnity was paid in gold-equivalent specie. What were the Reich's options for absorbing such a transfer? What was the equivalent share of European M0 (the monetary base) at the time?

• France paid in full by September 1873, eighteen months ahead of schedule, by floating two enormous public loans that were over-subscribed several times over. This is sometimes described as a triumph of French resilience. What does it suggest about French savings, French banking, and French national pride?

Section 2: The Gründerzeit speculative boom

The German Reich was constituted on 18 January 1871. Its capital markets in May 1871 were small, fragmented across the various member kingdoms, and unsophisticated by the standards of London or Paris. The new Reich did not yet have a single national currency. The Reichsbank did not yet exist.

Between 1871 and the end of 1873, approximately 900 new joint-stock companies were registered in the German states. The bulk of them were railway companies, urban-property speculators, and joint-stock banks. The same pattern played out on a smaller scale in Vienna across the Austro-Hungarian Empire.

Discussion:

• Why does a sudden capital inflow tend to flow disproportionately into railways, property, and finance, rather than into manufacturing or other forms of productive investment? Compare with similar patterns in the United States after 1870 (railway booms), Japan after 1985 (the Plaza Accord property bubble), and China after 2001 (the urban-property complex).

• Read the historiography on the Gründerzeit (Hans-Ulrich Wehler, James Sheehan, Volker Berghahn). What share of the new joint-stock companies were genuinely productive? What share were vehicles for share issuance?

• The Reich went onto the gold standard in 1873. The Reichsbank was founded by the Bank Act of 14 March 1875 and began operations on 1 January 1876. Why did the institutional architecture follow rather than precede the boom?

Section 3: The Gründerkrach

On Friday 9 May 1873, Black Friday on the Vienna Bourse, the Vienna Stock Exchange crashed. Over a hundred banks and brokerage houses failed in the first day. By 15 September 1873 the panic had reached the Berlin Stock Exchange. By the end of 1873 approximately 60% of the new German joint-stock companies founded in the previous two years had been wound up. The Long Depression that followed lasted in central Europe until approximately 1879.

Discussion:

• The trigger for the Vienna crash was the failure of speculative railway shares; the Berlin pattern followed four months later. What is the chain of contagion between two stock exchanges in 1873, before electronic trading?

• The depression of 1873-1879 had effects across the Atlantic (the Panic of 1873 in the United States) and into Britain. What is the right unit of analysis for the 1873 crisis: a German monetary phenomenon, a European financial phenomenon, or a global one?

• Bismarck pivoted away from free trade in 1879 (the Schutzzollgesetz). Was this a response to the Long Depression, a response to the new American grain competition, or both?

Section 4: The long shadow

The German financial system established its modern central-banking architecture only after the Gründerkrach: the Reichsbank from 1876, the formal gold standard from 1873. The Reichsbank in 1876 was a young institution by the standards of the Bank of England (founded 1694) or the Banque de France (1800). Its monetary architecture, established in the Gründerzeit, never developed the institutional sophistication that older central banks had spent two centuries acquiring.

The same monetary fragility surfaced repeatedly: the Panic of 1907 (which hit Germany alongside the United States), the partial banking crisis of 1913, and most catastrophically the hyperinflation of 1923, when the gold mark that France had effectively built fifty years earlier was wiped out at a peak exchange rate of one US dollar to 4.2 trillion paper marks.

Discussion:

• Did the 1871-1873 indemnity cause the 1923 hyperinflation? What is the strongest causal chain you can construct? What is the strongest objection to that chain?

• The historian Niall Ferguson has argued that Germany's monetary fragility was structural and originated in the Gründerzeit. Read his account in The Pity of War (1998) or The Cash Nexus (2001). What is the empirical evidence for the chain?

• Counterfactual: if France had paid the indemnity over the full four years (March 1875), would the Gründerzeit have been smaller? Would the Krach have been less severe? Would the long shadow have been shorter?

Section 5: China's surplus, 2001-2026

China acceded to the World Trade Organization on 11 December 2001. Since then, China has run a sustained external trade surplus that grew from a few tens of billions of dollars per year in the early 2000s to a record $1.2 trillion in 2025. China's foreign-exchange reserves stood at $3.36 trillion at the end of December 2025 and $3.43 trillion at the end of February 2026.

In the combined first two months of 2026, China's monthly trade surplus reached $213.6 billion, the largest monthly figure ever recorded.

The cumulative current-account surplus China has run since 2001 is on the order of several trillion dollars. The financial system into which it has been recycled is, like the early Reichsbank's, structurally young by the standards of the Bank of England or the Federal Reserve.

Discussion:

• Map the structural similarities. China's financial system is younger than the central banks it transacts with. China's financial system has had to absorb large foreign-currency inflows in compressed time. China's financial system has produced an obvious bubble in the area where surplus capital found the easiest deployment (urban property).

• Map the structural disanalogies. China is still under capital controls. China's surplus is not a one-off windfall but a sustained flow. China's banking system is largely state-controlled, which provides crisis-management capacity Germany did not have in 1873. China is the second-largest economy in the world, not a freshly unified medium power.

• Where does the analogy hold most tightly? Where does it break down most clearly?

Section 6: The property crisis as China's Vienna Bourse

The collapse of Evergrande, then China's second-largest property developer, in September 2021 is widely treated as the trigger event of the ongoing Chinese property-sector crisis. Property and property-related construction had reached approximately 30% of Chinese GDP at the sector's peak around 2020. Tens of millions of housing units have been wound up since then. Local-government financing vehicles holding non-performing assets are at a scale the central government has not finished accounting for. The IMF estimates potential unrealised losses in the Chinese banking system in the trillions of dollars.

Discussion:

• Map the Evergrande default (September 2021) onto the Vienna Bourse crash (May 1873). What is similar? What is different?

• The Chinese state has responded with property-developer bailouts, central-government recapitalisation of stressed banks, and a redirection of new surplus dollars away from property toward industrial export capacity (which is part of why Chinese EV exports doubled in 2025). Is this the response Bismarck would have wanted to have made in 1873? What are the limits of state-driven crisis management?

• The Berlin tenement boom was wound up over six years (the Long Depression). The Chinese property crisis began in 2021 and is now in its fifth year. Is the comparison on the same time-horizon? Or is China's crisis qualitatively slower because of its scale?

Section 7: The closing question

The Time Rhymes story closes with the line: "Last time, the financial fragility of the receiving country took fifty years to surface fully. It surfaced as hyperinflation."

Discussion (closing):

• What forms of monetary fragility are visible in China today that were not visible in Germany in 1873?

• What forms were visible in Germany in 1873 that are not visible in China today?

• If you had to write the analogous closing question for a future Time Rhymes story written in 2076, what would it say?

Suggested further reading

The Franco-Prussian indemnity and the Gründerkrach:

• Hans-Ulrich Wehler, Das Deutsche Kaiserreich 1871-1918 (1973); English translation as The German Empire 1871-1918

• David Blackbourn and Geoff Eley, The Peculiarities of German History (1984)

• Niall Ferguson, Paper and Iron: Hamburg Business and German Politics in the Era of Inflation, 1897-1927 (1995)

Comparative monetary fragility and central-banking architecture:

• Charles P. Kindleberger, Manias, Panics, and Crashes (5th ed., 2005)

• Carmen M. Reinhart and Kenneth S. Rogoff, This Time Is Different: Eight Centuries of Financial Folly (2009)

China's surplus and the property crisis:

• Michael Pettis, The Volatility Machine: Emerging Economies and the Threat of Their Financial Collapse (2001)

• Michael Pettis, Trade Wars Are Class Wars (2020)

• IMF Article IV consultations on the People's Republic of China (annual)

• Use the evidence manifest from the Time Rhymes story for primary news sources on China's 2025 surplus and the post-Evergrande property situation.