The Money Mountain (III)

The Roman system of coinage outlived the Roman Empire itself. Prices were still being quoted in terms of silver denarii in the time of Charlemagne, king of the Franks from 768 to 814. The difficulty was that by the time Charlemagne was crowned Imperator Augustus in 800, there was a chronic shortage of silver in Western Europe. Demand for money was greater in the much more developed commercial centres of the Islamic Empire that dominated the southern Mediterranean and the Near East, so that precious metal tended to drain away from backward Europe. So rare was the denarius in Charlemagne's time that twenty-four of them sufficed to buy a Carolingian cow. In some parts of Europe, peppers and squirrel skins served as substitutes for currency; in others pecunia came to mean land rather than money. This was a problem that Europeans sought to overcome in one of two ways. They could export labour and goods, exchanging slaves and timber for silver in Baghdad or for African gold in Cordoba and Cairo. Or they could plunder precious metal by making war on the Muslim world. The Crusades, like the conquests that followed, were as much about overcoming Europe's monetary shortage as about converting heathens to Christianity.

Crusading was an expensive affair and the net returns were modest. To compound their monetary difficulties, medieval and early modern governments failed to find a solution to what economists have called the big problem of small change: the difficulty of establishing stable relationships between coins made of different kinds of metal, which meant that smaller denomination coins were subject to recurrent shortages, yet also to
depreciations and debasements. At Potosi, and the other places in the New World where they found plentiful silver (notably Zacatecas in Mexico), the Spanish conquistadors therefore appeared to have broken a centuries-old constraint. The initial beneficiary was, of course, the Castilian monarchy that had sponsored
the conquests. The convoys of ships - up to a hundred at a time - which transported 170 tons of silver a year across the Atlantic, docked at Seville. A fifth of all that was produced was reserved to the crown, accounting for 44 per cent of total royal expenditure at the peak in the late sixteenth century. But the way the money was spent ensured that Spain's newfound wealth provided the entire continent with a monetary stimulus. The Spanish 'piece of eight', which was based on the German thaler (hence, later, the 'dollar'), became the world's first truly global currency, financing not only the protracted wars Spain fought in Europe, but also the rapidly expanding trade of Europe with Asia.



And yet all the silver of the New World could not bring the rebellious Dutch Republic to heel; could not secure England for the Spanish crown; could not save Spain from an inexorable economic and imperial decline. Like King Midas, the Spanish monarchs of the sixteenth century, Charles V and Philip II, found
that an abundance of precious metal could be as much a curse as a blessing. The reason? They dug up so much silver to pay for their wars of conquest that the metal itself dramatically declined in value - that is to say, in its purchasing power with respect to other goods. During the so-called 'price revolution', which affected
all of Europe from the 1540s until the 1640s, the cost of food - which had shown no sustained upward trend for three hundred years - rose markedly. In England (the country for which we have the best price data) the cost of living increased by a factor of seven in the same period; not a high rate of inflation these days (on average around 2 per cent per year), but a revolutionary increase in the price of bread by medieval standards. Within Spain, the abundance of silver also acted as a 'resource curse', like the abundant oil of Arabia, Nigeria, Persia, Russia and Venezuela in our own time, removing the incentives for more productive
economic activity, while at the same time strengthening rent-seeking autocrats at the expense of representative assemblies (in Spain's case the Cortes).

What the Spaniards had failed to understand is that the value of precious metal is not absolute. Money is worth only what someone else is willing to give you for it. An increase in its supply will not make a society richer, though it may enrich the government that monopolizes the production of money. Other things being equal, monetary expansion will merely make prices higher.

to be continued...