Silver, Prices, and the Limits of a Single Cause
Between 1570 and 1640, registered silver shipments from Potosí and Zacatecas to Seville totaled about 400 million pesos; smuggling may have added a third more. Over the same decades, prices in Castile roughly tripled, while prices in Ming China rose far less even though China absorbed perhaps a third of American silver through Manila. A royal official in Madrid writes that 'silver has ruined Spain: we have money in abundance and goods in scarcity.' A Seville merchant replies that the real problem is stagnant Spanish grain yields and Genoese bankers draining crown revenue. In Potosí, the mita drafted about 13,000 Indigenous laborers a year, and mercury amalgamation consumed both that labor and the mountain's water and fuel.
1. Both the official and the merchant are describing the same inflow of silver. Explain what evidence would distinguish 'too much money' from 'too few goods,' and say which explanation the Chinese comparison supports.
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Separating the two requires watching quantities, not just prices. If silver alone drove the inflation, the money stock should outrun output and velocity should stay roughly stable, and the effect should appear wherever the silver arrived. The Chinese case is the natural test, because China absorbed a large share of American silver yet experienced much milder inflation - hard to square with a simple money-supply story unless Chinese output was growing faster, or unless much of the silver was absorbed by hoarding, tax payment, and silver-as-money functions rather than being spent on goods.
In Castile the merchant's point bites. If grain yields were stagnant and Genoese bankers were siphoning silver abroad to service crown debt, Spanish prices could rise while Spain accumulated little productive capital - imported silver paying for imports and interest, not investment.
The official describes a symptom; the merchant names a mechanism. The Chinese comparison, where the same monetary shock produced a different price path, is what shifts the balance toward the mechanism.
2. Evaluate the claim that the silver trade made the seventeenth-century world economy 'genuinely global.' Use the passage and your reasoning to state both the strongest support and the strongest limit.
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The strongest version of the claim is not that silver touched every continent but that it linked them in a single causal chain with feedback. American extraction financed European fiscal states; European demand pulled silver toward Asia, where its ratio to gold made it more valuable; Asian goods - silk, porcelain, cotton, spices - moved back through Manila and Lisbon; and the effects ricocheted: Castilian inflation, Chinese monetary absorption, the reorganization of Potosí labor under the mita. Each leg changed the terms of the others, which is more than parallel trades.
The limits matter just as much. The network was thin: only a fraction of production crossed the Pacific in any year, and whole regions were untouched. Its costs were borne unequally - the mita's 13,000 drafted laborers a year and the mercury poisoning of the mountain's watershed were regional sacrifices with no share in the gains.
'Global' describes the connections, not the distribution of benefit. A strong answer holds both: genuine integration, very unevenly experienced.
3. A student argues: 'Prices tripled after the silver arrived, so silver caused the inflation.' Identify the strongest limitations of using price series alone to establish that causal claim.
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Price series show that prices rose; they cannot by themselves show why. Three problems stand out.
- The money supply is badly measured. The figures count registered shipments, and the passage says smuggling may have added a third more. The correlation between silver and prices is therefore computed on numbers known to understate the actual inflow.
- Everything moves at once. Population recovery, urbanization, warfare and taxation, coinage debasement, and New World demand for Spanish goods all cluster in the same decades. No single national price series can separate these causes.
- No counterfactual. Castile cannot be re-run without the silver, so the inference rests on a before-and-after comparison that cannot exclude rival explanations.
The best use of price data is comparative: China, Ottoman lands, and Castile received different quantities of silver on different schedules and show different price paths. That variation does work a time series cannot - which is why the Chinese comparison is the most evidentially valuable item in the passage.