SliHiiSrliVtll'H MIT LIBRARIES 3 9080 02246 2490 DUPL Digitized by the Internet Archive in 2011 with funding from Boston Library Consortium IVIember Libraries http://www.archive.org/details/marketeconomyineOOtemi OEWE oi- Massachusetts Institute of Technology Department of Economics Working Paper Series A MARKET ECONOMY IN THE EARLY ROMAN EMPIRE Peter Temin Working Paper 01-08 February 2001 Room E52-251 50 Memorial Drive Cambridge, IVIA 02142 This paper can be downloaded without charge from the Social Science Research Network Paper Collection at http://papers.ssrn. com/paper.taf?abstract_id=260995 Technology Department of Economics Working Paper Series Massachusetts Institute of A MARKET ECONOMY THE EARLY ROMAN Peter IN EMPIRE Temin Working Paper 01 -08 February 2001 Room E52-251 50 Memorial Drive Cambridge, MA 02142 This paper can be downloaded without charge from the Social Science Research Network Paper Collection at http://papers.ssrn. com/paper.taf?abstract_id=260995 MASSACHUSEnS INSTITUTE OF TECHNOLOGY AUG 2 2 2001 LIBRARIES ABSTRACT I argue here that the economy of the early Roman Empire was market economy. The parts of this economy located were not tied together as tightly as far primarily a from each other markets often are today, but they still functioned as part of a comprehensive Mediterranean market. There are two reasons of the why this conclusion Roman economy as a is important. First, whole it brings the description into accord with the fragmentary evidence we have synthetic view provides a platfonn on which about individual market transactions. Second, about the origins and eventual demise of the this to investigate further questions Roman economy and about conditions for the formation and preservation of markets in general. A Market Economy in the Peter Early Roman Empire Temin MIT Febmary I 13, 2001 thank Roger Bagnall, Alan Bowman, Richard Eckaus, Joseph Manning, Ostrow, Walter Scheidel, and the editor of this journal for mine alone. helpflil Ian Morris, Steven comments. All errors are A Market Economy in the Early Roman Empire The economy of the early Roman Empire has been an object of study The discussion has been marked by continuing century. primitivist/modem debate and lectures, at debate, for at least the last known sometimes as the other times as the Finley debate, following his famous Sather The Ancient Economy. This paper economist rather than an ancient historian. economy," and to see evidence if it fits the is a contribution to this debate, written by an My purpose is to define the concept of a "market we have for the early Roman Empire. Finley declared that, "ancient society did not have an economic system which conglomeration of interdependent markets.'"' oppose the views of Rostovtzeflf within the Engerman Monis in economic history, but He drew field 1 he did not exphcitly join tightly as I. and even resolve the debate parts of this economy located markets often are today, but they Finley, still vigorous today. ^ I of the early hope Roman to clarify the Empire. Roman Empire was primarily a market each other were not tied together as fijnctioned as part of a comprehensive The Ancient Economy (1973), 22-23. K. Polanyi, The Great Transformation I. is still far fi-om ( 1 944); K. Polanyi, The Social and Economic History of the Roman Empire the Cross (1974). ' their conceptual apparatuses.^ for the period argue here that the economy of the early economy. The M. to suiTimarized the debate fueled by Finley's dramatic lectures in his foreword to the 25"' issues in this debate ' on research by Polanyi of ancient history and those of Fogel and anniversary edition and argued that the controversy ' implicitly was an enormous Morris, 'Foreword', in M. I. Finley, ( 1 The Livelihood of Man 957); R. W. The Ancient Economy, updated Fogel and ( 1 977); S. L. M. Rostovtzeff, Engerman, Time on ed. (1999), ix-xxxvi. why Mediterranean market.'' There are two reasons brings the description of the evidence Roman economy as a whole we have about individual market transactions. platform on which to investigate Roman economy and fiirther conclusion this important. is First, it into accord with the fragmentary Second, this synthetic view provides a questions about the origins and eventual demise of the about conditions for the formation and preservation of markets in general. Models and Tests Finley called for models of the ancient subsequent "Further Thoughts.'* This is a economy both in his lectures good approach. But what does and it mean to use model of the ancient economy? A model is an abstract representation of reality. than reaUty of necessity because it is created conceptuahze a few dimensions of reality to reach conclusions, With and they have the advent of computers, the most useful we to a time. and natural scientists Models be simple enough for a simpler It is who can only typically are manipulated in order their formulators to manipulate. much more complex models than before, but simplest. Most economic models assume economic forces more industries or, sometimes, in the First, it '' social can deal with models often are the institutions or other at by in his the existence of a market economy. The models show affect prices, quantities, economy as a whole. and related variables in The value of the model one or is two-fold. provides a simplified description of events that can be repeated and discussed. Second, This analysis is similar in spirit to K. Hopkins, 'Taxes and Trade in the Roman Empire", V/J^, 1980, but concentrates on the processes by which resources were allocated, in contrast to Hopkins' concern with the allocation - Finley, how itself, The Ancient Economy (1999), 27, 182. it allows economists to would have happened test counter-factual propositions. That if the institutions the economist can ask is, or other economic forces had been different than they actually were. The happened; it a conjecture about what would have happened had history been different. conjecture is is And the as well. resulting counter-factual history conditional on the model. conjecture is limited what model If the by is the model; not an account of events as they is it The a poor one, the conjecture will be poor can only track the variables in the model in the counter-factual world. How can we tell whether a model is poor? generations of philosophers of science, and I This a question that has energized is will attempt only the most concrete answer here. A good model fits the observed facts more closely than a poor one. statement has three important components. First, new to not data are discovered, models made up is that motion data searches When there that is abstract; it tell This economist last fields fits differently, behind it. good models If are One advantage of of economic the facts modem When the data are less formal tests facts data to settle open questions and sets in which model an abundance of numerical data, Roman Empire, is better more have proven successful in many provide tests that economic historians use. for the early be changed. Stated often suggests the need for it must be a ranking by which one can another. any model depends on the out of whole cloth; they are distillations of the available data. using a model there may need This apparently simple more statistics history. Second, closely than and econometrics quahtative, as they generally are have to be used. Third, no model is good in the or worse than an altemaUve. point who meets is critical. Economics is a comparative science. a colleague while walking across campus. The story The colleague is told of an hails the economist and asks, "How are your children?" The economist responds, "Compared to what?" This response, only slightly exaggerated in this story, is typical Economic models are supported "null hypothesis " The by showing null hypothesis that they are superior to another, often called the of most economics is that there market, that prices are determined by supply and demand. This the Roman economy, I Empire propose to in two because test the stages. I I market economy, that are fi"ee to move first that many much of this that is, economy in the early Roman individual actions and interactions are seen an economy where most resources are allocated by prices More technically I will Roman Empire typically were equiUbrated by means of prices. literature, is Polanyi. He asserted that, we find them, reciprocity, ways a market begin by presenting the altematives to which market transactions are to be compared been used widely. as was then will argue that there were enough market transactions to and the altematives to which a market economy as for so a well-functioning a problem for the study of in response to changes in underlying conditions. argue that markets in the early I is is precisely this typical null hypothesis that needs to be tested. hypothesis that there will argue best as market transactions. constitute a it is of economists. to organize the to be compared. The He provided fianctions logical starting point, a taxonomy of interactions that has "The main forms of integration redistribution, economic is in the human economy and exchange.'* These forms describe of any society. Reciprocity, as the are, different term suggests, is a system in which people aim toward a rough balance between the goods and services they receive and that they give to others. obligations ' and tradition, Polanyi, The Livelihood The reciprocal obligations are detennined by social and they change only slowly. This organization can be fomialized, as of Man, 35-36. in Malinowski's Trobriand Islanders, or simply followed with informal or implicit Redistribution is a system in which goods "are collected custom, law, or ad hoc central decision."^ This system households, where states. The services. it is known as is is one hand and distributed by virtue of present in units as small as modem householding, as well as in the taxation levied by essential characteristic Exchange in rules. is that a central authority collects the famihar economic transaction and where people distributes voluntarily goods for each other or for money. Polanyi's categories appear frequently various aspects of classical antiquity, from Peacock and in goods and exchange books about Wilhams on amphorae to Jongman on Pompeii to Gamsey on food.^ Polanyi's definitions of these different forms of integration are appeahng, but imprecise. They suggest three models of interaction; we need choose between them. Pryor proposed tests in to make them precise enough that we can a study of primitive and peasant economies that can be used to differentiate Polanyi's forms of integration.^ Pryor distinguished between what he called exchanges and services are transfers. Exchanges are balanced transactions where goods or exchanged for other goods or services of equal value. This of course is the kind of behavior most often observed in markets. Transfers are one-way transactions where goods and services are given without a direct retum. Pryor excluded "invisibles" from rather than ' Ibid. 40. * D. P. S. Grants, tributes, and taxes are this accounting, all transfers. so that taxes are considered to be transfers an exchange of goods or money in order to purchase social order or military Peacock and D. F. Williams, Economy and Society of Pompeii ( 1 Amphorae and the Roman Economy (1986); W. Jongman, The Gamsey, Famine and Food Supply in the Graeco-Roman 988); P. World (\999). '' F. L. Pryor, Economies The Origins of the Economy: A Comparative Study of Distribution (1977). in Primitive and Peasant success. This exclusion makes all necessary because one can always hypothesize an invisible gain that is transactions balanced. In that case, there is no way to discriminate between different forms of behavior. Pryor subdivided exchanges into those in which the exchanged can vary and those the latter do not. use of money is in He termed the which it ratio of goods or services The fomier may cannot. former, market exchange; the or latter, may not involve money; reciprocal exchange. The a good index of this distinction, as are changes in the exchange ratio over time. In the presence of money, of course, changes in exchange ratios are expressed as changes in prices. Pryor divided transfers into centric and non-centric ones. Centric transfers are between individuals role."'° In the authorities. transfer. Roman context, If the grain to feed If the grain and "an in a society institution or an individual carrying out a societal-wide large-scale centric transfers would be those with the Imperial Rome were provided by taxes were obtained by purchasing it or tribute, this would be a centric with money, then this would be a market exchange. These categories are observable, that is, they provide boxes into which activities and societies can be placed with confidence. They also correspond closely integration. Polanyi's first form, reciprocity, is to Polanyi's composed of Pryor's non-centric reciprocal exchanges. His second form, redistribution, is accomplished His third form, exchange, is characterized Pryor's project can be seen as a ' Ibid., 34. way to forms of economic by transfers centric transfers. by what Pryor called market exchange. In make and fact, Polanyi's classification empirically testable, not ' . necessarily reaching Polanyi's conclusion that "price-making markets [are] the exceptional occurrence in history."' This tri-part schema corresponds also to a division of individual behavior. I have argued that people even today relay on a mixture of behavioral modes, choosing which one to use as a resuh of internal and extemal forces.'- These forces can be represented on two dimensions. One dimension measures The other dimension indexes autonomous and change change is is autonomy is is, life. and reciprocal exchanges, transfers, that is, redistribution. high and the pace of change is is moderate, they have exphcit goals in mind and choose actions that advance their plans. These different types of organization used in economic When neither very high nor very low, then people use people employ instrumental behavior, that of centric When people slow, they typically utilize customary behavior. command behavior. When personal autonomy centric transfers an index of personal autonomy. the rapidity of change in the extemal environment. are less rapid and personal internal forces along modes of behavior correspond Customary behavior generally that And is, in reciprocity. is to the three used for non- Command behavior is typical instruinental behavior is used in market exchanges. There consequently are two types of tests we can use to discriminate between the various kinds of integration. Prices are used in market exchanges, but not in non-centric transfers. They may appear in reciprocal exchanges, although they economic conditions " W. G. Neale, 'The Market (eds.). '' P. in that context. Trade and Markets in will not vary in response to Variable prices then can be used as markers for the Theory and History', in K. Polanyi, C. M. Arensberg, and H. W. Pearson Early Empires (1957), 371 in the Temin, 'ModesofBehawior', Journal of Economic Behavior and Organization 1 (1980), 175-95. presence of market exchange. Phrased differently, that can infer from the existence of prices market exchange more closely describes the interaction containing the prices than Of course, we will need to make reciprocity or redistribution. over time to that we is, make sure that these prices can vary sure that the prices are not simply stable markers of a non-centric exchange, a specific type of reciprocity. In addition, people command, since these wiU behave instrumentaUy two modes of behavior in market exchanges, not customarily or by are typical of reciprocal and redistributive organizations. Thoughts are observed far less easily than prices, although ancient sources often report the former more volubly than the latter. Nevertheless, we can ask describe their activities if they are describing instrumental, customary or when ancient authors command behavior. We do so by comparing how well each model of behavior fits the described actions or the imputed thoughts. The analysis so far tells many market exchanges allocated There is by are how to needed prices that are free to no general answer to and have no need to test its to find market exchanges in the early make move in a market economy where most resources are response to changes in underlying conditions? this question, for very existence. Roman Empire. But how most economists deal with market economies It is necessary to compare Rome with other economies to see the nature and extent of market exchanges in market economies. England and Holland economies in the that 17* and 18"" century, shortly before the Industrial Revolution, had everyone agrees were market economies based on agriculture. Yet even these market economies, a substantial part of marketed output transfers rather than by market exchanges. Taxes 10 in Britain was allocated by in centric were over 10 percent of national income, and taxes in Holland were over 40 percent of the income of unskilled laborers, of which about half came from excise taxes on goods consumed by workers. Some market exchanges also had characteristics of reciprocity and customary behavior. Large pubUc works and in both countries, primarily to drain land (in Holland) contain the sea, were paid for by wealthy men, mostly but not exclusively large landowners. Nominal wages stayed constant for many years at a time in the market economy of early modem England, even though grain fluctuated widely, suggesting that the "labor market" employment relation often Even though there in pre-industrial Britain contrasting economy made was reciprocal exchange. at least partly of an oxymoron; the ^ ' were extensive non-market transfers and exchanges, most resources and Holland were allocated by markets. This can be seen by them with economies described by was the price that were not primarily market economies. The feudal Marc Bloch was a customary economy. '"* Most transactions were without prices as tenants worked on the lord's land part of the time and as vassals entertained lords to show their fealty. In addition, many transactions were — tenants and vassals transferred resources — labor ^to their labor or the lords in return for protection in the chaotic obligations were written down and then commuted economy developed into early centric transfers as produce of their tenants' world of the medieval period. As into money payments, the customary feudal modem market economies. Brown andS. V. Hopkins,/^ Perspective of Wages and Prices (\9?,\)\ P. K. O'Brien, 'The Economy of British Taxation, \66Q-\?,\5\ Economic History Review A\ (1988), 1-32; R. Floud and D. 1700-1860 (1997); J. de Vries N. McCloskey, The Economic History of Britain since 1700, Second Ed., V. and A. van der Woude, The First Modern Economy: Success, Failure, and Perserx-erance of the Dutch Economy. 1500-1815 {\99T). '" M. Bloch, Feudal Society (1961). '^ H. Phelps Pohtical 1 11 : Centrally planned economies in 20"^ century Russia and China were command economies. Russian industries and Chinese famis were compelled to delivery quantities of goods according to a central plan. Prices in the Soviet time. Planners expected firms to innovate out they set a higher, but relabeled as new instead that fixed, price for goods, and there in the countryside Only now still of China Union were fixed was no When that did not work, of the love of sociaUsm. "new goods." Not surprisingly, increase in innovation. until quite recently, as far as we can '^ for long periods of many old goods were There were not even prices see, only production quotas. market reforms are being introduced are farmers seUing produce for a price of delivering a quota. There is no formal test to decide which kind of economy of these few economies should appear an economy about which in which of course we have fewer preconceptions we Do the most important commodities, many transactions clear, like is we are observing. why they were will need The classification chosen. But for to ask several questions. food and lodging, have prices that move? Are there which price appears to play a large part? Do prices move to clear markets? Market Exchanges and a Market Economy There are many sources for the history of Rome, but they are curiously silent on questions of economic organization. Literary evidence does not suggest a focus on economic affairs in ancient Rome, but then modem economy came irom the " J. S. Berliner, it does not have files The Innovation Decision this focus today. If all we knew of the Times Literary Supplement or the in Soviet Industry (1976). 12 about the New York Review of Books, we would be hard-pressed to understand the economic enabled the authors represented in these publications to pursue their addition to being Limited, the literary evidence who were uninterested Finley in in market The Ancient Economy activity. fails to when literary interests. In we have also was compiled by medieval Greene argues that the Uterary evidence scholars used by reveal the technological progress in the ancient world that is visible in the archeological record.'* hterary sources institutions that argue that there I economic information is in the interpreted in the proper context. We observe isolated prices for many Roman goods, but we lack continuous series of comparable prices for goods and services, as many historians have noted. Markets do not generate a permanent record of changing prices; price series exist only if someone or agency had an interest in collecting some them. Newspapers reported prices in pre-industrial Europe and America, but we do not have newspapers from ancient Rome. (The most complete ancient price series, ironically, comes from Babylon. goods and services had prices .'^ ' ^) We do have abundant evidence that many Renters paid rent on their apartments in Rome, employers paid wages to free workers and rent for slaves, travelers paid for food and drink for themselves and the "' their animals.'^ These are the ordinary prices of a market economy, showing goods and services used in the course of ordinary life that many of were valued by price and paid K. Greene, 'Technological Innovation and Economic Progress in the Ancient World: M. I. for by Finley Re- Considered', Economic Hisloiy Review 53 (2000), 29-59. " A. L. Slotsky, The Bourse of Babylon: Market Quotations in the Astronomical Diaries of Babylonia (1997). '" A. C. Johnson, Roman Empire: Roman Egypt to the Quantitative Studies Reign of Diocletian (1936); R. Duncan-Jones, The Economy of the 982); D. Rathbone, Economic Rationalism and Rural Society in ( 1 Third Century A. D. Egypt (\99\). '" CIL 4.138; Cicero, An Essay about Duties, 1.42; laciXns, 13 Annals, 6.13, 12.43; CIL 4.1679. money. The Diocletian was not it price control edict of 301 attempted to fix a as extensive as, say, the Preisstop Decree issued reveals that there were flexible market prices means of payment. The issue — but rather whether that coin was used and he asserted money issue here makes sense it that records to of transactions Even testifies to not the size of the speak of a for transactions throughout the rather than barter. seems obvious is by the Nazis that the authorities The abundant evidence of Roman coinage wide variety of prices?" the money It in the 20"' century,^' but wished to control. common use of coins as — supply money supply at a a contentious Howgego argued all. Roman Empire." Egypt was fiilly monetized, in other distant areas showed them to involve in the countryside, people carried coin while traveling. that they carried coin in anticipation of spending their It money buying goods and services in market exchanges. In addition to prices for goods and services for immediate delivery, we have many examples of loans. One example, from a Dacian gold-mining village in 162 CE, shows a common form: Julius Alexander, the lender, required a denarii promise in good of genuine and sound coin would be duly settled faith that the loan on the day he requested Alexander, son of Cariccius, the borrower, promised in good faith that settled, and declared a loan, and that he the interest on would be paid that owed them. Julius from this Alexander or Alexander required a promise day would be one percent per to whomever it might Alexander, son of Cariccius, promised in good faith that Primitius stood surety for the 20 CIL '' Reichskommissar it in good thirty it. would be so he had received the sixty denarii mentioned above, this principal to Juhus it of 60 in cash, as faith that days and in the future concern. would be so paid. Titius due and proper payment of the principal mentioned above 3.805-09. fiir Preisbildung, 'Mitteilungsblatt des Reichskommissars fur die Preisbildung', 1937-38 (BundesarchivRD13/I) -- C. Howgego, 'The Supply and Use of Money in the Roman World 200 14 B.C. to A.D. 300", JRS 82. 1-31. and of the interest. Transacted at Albumus Maior, October 20, in the consulship of Rusticus (his second consulship) and Aquilinus.^-' We have many other records of loans, not always so complete. loaned 3500 drachmas to another the same loan is interest rate, woman 420 draclimas noteworthy because it for a one-year loan, by a bank Dacian draft same time, 141 CE, on a private bank.-'' This The Egyptian loan was between women and suggesting an even more sophisticated market transaction than the rate but not of interest on loans varied, showing that these loans were not all rates are found. The interest rate at a traditional almost always was in the range of four percent to 12 percent, seldom higher than the rate in these provincial loans. This range reflect a prohibition on loans evidence for a legal limit 1 5 or 16 percent, but is at more than 12 not strong.-- 24 or 48 intermediary rates suggests that the Andreau argued percent, although When the percent.-'' reciprocal exchange at a fixed rate; they The interest rate variation was shows higher, it were multiples of twelve. Monthly " CIL ^' ^^ our was not were not a difficulty calculating rates. They common rates tended to range from simple fractions to three or four 3.934-35. P. Tebt. J. may were market exchanges. The apparent absence of Romans may have had rates that typically that these loans quoted them on a monthly basis, as in the loan described here, and the most ^'' at loan. The level, draft, by a at the woman extends the previous example in several dimensions while recording an essentially similar transaction. effected Egypt for one year in For example, a II 389, quoted in Jane Rowland, Andreau, Banking and Business Women and Society in Greek and Roman Egypt Roman World (1999), 90-94. in the Cicero, 2 Verr. 3. 165-70; Brutus' loan to Salamis in Cyprus. 15 (1998), 254-55. percent, perhaps because lenders used Roman numerals. Roman markets with the precision of modem markets, but that does not Other aspects of the Dacian loan transaction demonstrating again that money was used commonly mean they could not operate did not operate at market nature. testify to its Roman in the early It is all. a loan of coin, Empire. Prices, in The other words, were not simply accounting units; they were used in economic exchanges. loan was guaranteed by principals. interest It a third person, showing that it was not a social act between the two even was assignable to an unspecified person, as revealed by the statement that might be paid to someone other than the lender. This loan was not negotiable in our modem sense, but it had some The loan was sophisticated fmancial attributes. down to written provide a written record in case the lender defaulted; the effort of recording the loan only worthwhile if there was recourse to a court in that eventuality. The loan was a binding not a social obligation mediated by social pressure. This loan was River, far away from Rome, showing that market activity was not made north of the was contract, Danube restricted to the city of Rome alone. Were the interest rates for loans connected to other interest rates? — discussed the outstanding evidence on the profitabihty employed the records of over 100 perpetual foundations support grants (the alimenta) in rates. many Italian They ranged, with only very few Duncan-Jones, The Economy of the set in the —of Roman word up to ftind agriculture.^^ government He child- second century to calculate interest exceptions, from five percent to twelve percent; Duncan- Jones could not detect trends by the -' towns his Duncan- Jones size Roman Empire, of foundations nor the dates from 132-38. 16 tlie limited data. Andreau argued that the interest rate and explained the difference by the greater The concepts of profitabihty and these are market concepts. he argued if ancient Romans argue about interest rates in 7"^ interest 1 and loans. know how to on the Roman that there was money in different ways, that 8"^ century England. money in the asset that interpret the agricultural foundations a capital market in ancient does not mean that is, Roman and the Rome. Rome had He presented data on the an assertion based on the would eam rate investors of would the highest retum.^' evidence on interest and profit in a rate for The similarity between the a capital market that resembled a way that at least modem banking allowed people to participate. ^^ Andreau, Banking and Business ^'' G. Clark, 'The Political Foundations of Modem Economic Growth: England, 1540-1800', Joi(/-«o/ of World, Interdisciplinary History 46 (1996), 563-88. 17 of A prosperous ancient Roman looking to either choose the kind of economic activity in which they wanted to Roman rate monetary loans suggests strongly system, only that there were market transactions organized in a in the if or custom. Clark used exactly this kind of evidence to lend or borrow could look either to urban loan companies or to agricultural foundations, in Italy. This when but the literature on loans only reciprocal or redistributive organization of economic activity. interest on land in anachronistic reasoning He did not need to defend the proposition that both be able and want to put their hard to 1 the return makes sense within market economies; agricultural foundations to contest on government It is interest rates was higher than money. '^ could choose to invest their command of Enghsh risk in lending eamed higher returns, they were not constrained by profitabihty typically Andreau may have been indulging that higher-risk investments makes sense on loans 94. Can we find evidence of instmmental behavior these prices? According to Plutarch, Cato "used to lend disreputable form of speculation, that is nmnber of fifty, activities, even many representing as if not reported money in the underwriting of ships. borrow money from him were obligated to form a large ships, how ancient Romans that suggests what is Those association, surely the most who washed to and when he would take one share regarded in the this reached the company. "^° Cato's completely accurately by Plutarch, presuppose a variety of market conditions existed even before the formation of the Empire. Maritime loans were a matter of routine; there were ship owners lenders who had capital to invest. who needed credit to finance trade, and there were Ship owners formed companies, and these associations apparently could be responsible for several ships, even if not quite 50. There were multiple investors in such companies, for Cato was only one among an unknown number of other investors. Plutarch's account also reveals quite sophisticated instrumental behavior. loans was well known, and Cato understood more ships by himself This buying a mutual fund. that a is or that he formulated in the 20"' century. it was same kind of behavior that a Plutarch, ships instead of owTiing one or modem investor uses when knew the theories of diversification that have been We must however conclude that his behavior was not command instrumental as he tried to earn money in a Plutarch's reference to 50 other investors suggests that Cato ' maritime We cannot suppose that Cato had the range of investments open to him modem investor has or customary; the risk in He used that diversification reduces risk. by buying a small share of many diversification to reduce his risk The Cato the Elder, XXI.5-6. 18 market context. was not alone. And We do not know at this point available away whether such investments were more generally restricted to the city in the empire, although interest-bearing loans itself or were were being made as far as Dacia. I conclude therefore that we have ample evidence of extensive market prices and exchanges in the Principate. This view agrees with that of some recent histoncal research. Rathbone provided a careful analysis and discussion of Egyptian of extant prices made any conclusion about them we of Rome tentative. He prices, noting that the paucity argued nonetheless, "As far as can judge, the prices for wheat, wine and donkeys were basically formed by the operation of free-market forces, that is the fiindamentals economy. ..The prices . individually prices."^' typical in private sales by market bargaining hi terms of the of supply and demand seem, on the whole, to be in a 'real' monetised prices arrived at rather than being standardised, customary or notional model used here, the prices represent extensive market exchanges of a market economy, not reciprocal exchanges typical of an economy based on reciprocity. It is allocation of resources in that prices market economies, and relationship as well as indications Macedonia show not enough, however, to in Hadrian's time were widespread. Prices we need to have of the prices themselves. shows An evidence of this causal inscription '' more cheaply than the current price Rathbone, "Prices and Price Formation dans les economies antiques from Lete that prices equihbrated grain markets. Manius Salarius Sabinus, a gymnasiarch and benefactor, who very often sold grain in Roman affect the "The in times in city celebrates of shortage and when the emperor's army was passing Egypt', (1997), 211. 19 Economie antique, Prix et formation des prix — through, provided for the annona 400 medimnoi of wheat, 100 of barley and 60 of beans, plus 100 metretae of wine, much cheaper than the current price."^^ The inscription celebrated an intervention in a functioning market the anny was passing when prices rose in response to the added through. In normal times, people could extraordinary circumstances was unusual activity called for food shortages caused the price of foodstuffs to rise, buy food in markets; demand as only in and celebrated. Grain and other and the city's benefactor sold food at a lower price to alleviate the shortage. Price equilibrated the markets for grains and other food, in other words, but people were not always happy with the price needed to produce this equilibration. Even a market price when the price of an today, the question The biggest markets posed whether government should intervene to important commodity like is estimated at in the city If) to — raUroad. Grain was exported was shipped over the to Rome sea to from Spain and as Rome months on either side. would remain from was far until the cheaper to ship advent of the Sardinia, Sicily, Africa and Egypt. Oil until March, and dangerous for about two There must have been a large amount of shipping coming Quoted in Gamsey, Famine and Food Supply in the Graeco-Roman World, 247^8. " G. Rickman, The Corn Supply ofAncient Rome (1980), 10; Gamsey, Famine and Food Supply Graeco-Roman World, 191,231. '' " D. J. year, The Mediterranean was "closed" by bad Africa.^'' weather for four months a year from November additional it It city's Rome in the 40 million modii of grain a about 150-300,000 tons, plus extensive supplies of oil and wine.^^ food across the Mediterranean than over land of Rome. The about a million inhabitants. Roman Empire therefore needed a lot of supplies offset oil rises sharply. were markets, were for food, if they population in the Principate generally early is Mattingly, Tripolitania (1995). 20 in the in and out of Ostia during the summer, even though large ships went to Puteoli Naples, where grain was transshipped If this transfer. directly by Roman movement of market exchanges even discussion of the were paid in from if the grain sales then this was that there offered to Rome as tribute or movement of grain was a of grain by farmers, was purchased from Roman economy with the money. He noted If this grain authorities, resulted Bay of into smaller vessels for the coastal trip to Ostia. How was this shipping organized? commandeered in the it centric was composed of a tax revenues. Hopkins began "unexceptional" proposition that most were taxes of grain in kind had been series his Roman taxes from Egypt and Africa, used for free distribution in Rome, the annona, but only a small part of the grain imported into — Rome —was ^perhaps 15 percent annona was purchased with view" for free distribution.^' public funds, but that grain for Imperial distribution kind.^^ The bulk of grain result Gamsey and of redistribution, the to Italian annona, must have been in privately Roman authorities would have had to use an extensive oil. There is no evidence that the Imperial requisite large bureaucratic administration. farms were exempt from taxation, and they sold varied products to urban consumers in market exchanges. in the early from other taxes and have been arranged by customs or reciprocity. If they bureaucracy to manage the huge flows of grain and government had the that the grain for the Sirks stayed with the "prevailing collected separately imports, not destined for the owned. The imports were too large were the was Rickman argued Roman Empire have Many examples of Italian survived. The farmers fanners selling their produce sold, not to get money " Hopkins, 'Taxes and Trade in the Roman Empire'; B. Sirks, Food for Rome (1991), 21. " Rickman, The Corn Supply of Ancient Rome, 40-42; Gamsey, Famine and Food Supply Roman World, Til; Sirks, Foodfor Rome, 25. 21 Roman and other to pay in the taxes, but Graeco- to pay their rent and buy articles they did not produce themselves. Itahan farmers could transport goods to an urban market and produce to market, or sell their sell them there, hire ships or space on ships to carry crops to middlemen at the farm gate.^^ Cato, writing a little before the Principate, reported sample contracts for the sale of ohves, grapes and wine. question of who bore the risk of wine spoilage was addressed These transactions were exchanges, not unidirectional explicitly in the contract transfers, — ^the price —can vary. There were no traditional or fixed rates these cases. There were prices that could vary and payments in money. market exchanges, that is, Rathbone argued Egypt. and offered that Not only were market parts is whether the rate of exchanges in The exchanges were activity existed in rural areas as well as urban, at least in for estates in Egypt were there prices for grain replete with prices for whose activities myriad goods and for donkeys, but also prices for services by various craftsmen and workmen. Rathbone concluded composed of many of sale.^^ purchases and sales. The records he found services. The and they were market exchanges as well. The distinction between market and reciprocal exchange of exchange their were coordinated aided by a sophisticated accounting system that was in the that the to exploit spirit Appianus estate was economies of scale, of double-entry bookkeeping.^' The estates whose records have survived were connected to and part of a market economy. The were " N. ships used to transport grain also not, like the were not the property of the Imperial army, operated directly by the state. The operation was Morley, Metropolis and Hinlerland (1996), 159-74. "Cato,/(gr., 144^8. ''^ Rathbone, Economic Rationalism and Rural Society, 396-401. 22 far too state. They complex for — the small bureaucracy at the head of the Empire, and ships Rickman stated baldly that "private enterprise shipping grain to Rome.""" It was was the owned. the context in which Cato operated. tenders from the highest bidder to farm out redemptura" Shipping of ships, were used privately backbone of the whole business" of How did one engage a ship in the early Roman Empire? contract, a —were like land "The Romans had much or all of what the State needed, contracts with navicularii, people to obtain grain for the imperial distributions, the the habit of inviting by way of a making commercial use annona, in Rome. A navicularius could appoint a magister navis to accompany the ship in his place, and he could form a societas which could survive the death or bankmptcy of one of its members. Contracts usually were for five years.'" These arrangements do not sound like are not following orders, and contracts are not command behavior or centric commands. The arrangements appear to be reciprocal exchanges or non-centric transfers, that with the grain itself, the sheer scale transfers; bidders of the shipping required is, to feed also do not Polanyi's reciprocity. As Rome would have required a large bureaucracy to maintain a set of fixed exchanges that would accomphsh the needed task. In addition, ancillary records are consistent with market exchange, not reciprocity. For example, there were mantime loans to finance shipping with insurance provisions. The loans had an ship interest rate at was lost. which they were to be repaid, but there was no obligation to repay In other words, the lender shared the risk of shipping with the ship '"' Rickman, The Corn Supply of Ancient Rome, 27-28. '' Suks, Foodfor Rome. 25-33. 23 if the ovmer and the owner of the for bearing this ship's contents. risk.''^ This The interest rate resemble the organization of trade in the owners combined with others so shares in only a hi colonial ships, few trade in the early Roman Empire New England colonies around that ships were owned by multiple ships, three or fewer, but a few rich among voyages, although the men owned diversification to reduce risk financial investors shares in up to 70 We do not know if counterparts, but conscious can be only instrumental behavior designed for market exchanges. system in the early monetary system. There even was a in, Most of subgroups in these groups."*^ Roman companies had longer lives than their colonial New England were called 700. There too ship investors. repetitions combinations reveals the existence of stable investment The 1 appears to New England, the associations of investors typically lasted only for a single voyage. Tlie investors varied shifting compensate the lender in order to a sophisticated economic transaction. is The organization of Mediterranean owned was high Roman Empire also had some of the liquidity crisis in 33 attributes of a CE in which interest rates rose, and land prices collapsed. Tiberius made available a substantial modem loans sum of money to be loaned to landowners without interest for three years to restore liquidity.'" This crisis exposed several aspects of the Roman economy. Members of the aristocracy were borrowing Loans were not pervaded freely. The price of land was restricted to specific activities, but not fixed. It was a market outnumbered buyers. People with land could Roman price that could sell as Andreau, Banking and Business "' B. Bailyn and L. Bailyn, Massachusetts Shipping, 1697-1714: '*'* Tacitus, Annals in the 6, World, fall ranks of Roman Ufe. when putative they wished, and people could "*' in the all 1-3. 24 buy if they 54. A Statistical Study (1959). 16-17; Cassius Dio, 58.21.1-5; Suetonius, Tiberius 4S.\; quoted in C. Age of Tiberias {\97b), sellers Rodewald, A/owev had the money. This well-documented financial crisis demonstrates clearly that prices were used to equilibrate both the financial and land markets. seems hkely It records fi"om the most that abnost aU farmers were aware of market humble of farms, but even they do not seem prices. to have been isolated householding cocoons. They were not fliUy autarchic, whatever their aims They paid taxes, they sold was of homegrown market activity food. extended from the Heroninos and may have been. produce and bought items even though most of their consumption As all always, records from Egypt are the way down the economic related archives shows more abundant; they suggest that the rural that "Other incidental evidence ladder. poor often flmctioned economically as family units whose members simultaneously engaged activities, We do not have many in a wide range of including farming small plots of owned or leased land, leasing animals and utilities such as presses and bathhouses, fixed-term and casual labouring, petty retailing, fishing, domestic crafts and so on."*^ Wherever information on production and consumption has survived, so has evidence of market exchanges. It would be strange indeed if farmers and craftsmen operating in this context did not take these prices into account when planning their activities. Roman prices, in other words, contained information about the avaUabihty of goods and even about the advantage to be gained from selling farmers' own produce. This is the role of prices in a market economy. The responsiveness Romans "^ as well. to prices can be demonstrated from the actions of upper class We do not leam about their petty purchases, as we would not hear of the Rathbone, Economic Rationalism and Rural Society, 393. 25 Rothschilds' laundry liquidity crisis bills. But we do them buying and see selling land, as illustrated by the of 33. These transactions clearly were market exchanges. The price of land changed, and senators were sensitive to changes in the price. They were not engaged in informal transfers or fixed, repetitive reciprocal exchanges when they purchased land. Nor did they seem to be following orders from a central authority that would be typical of command behavior and centric transfers. A detailed land register from Italy, the Trajanic inscription from Veleia, shows that much Itahan land was privately held and could be valued in monetary terms. Estates typically were composed of discrete holdings had been acquired through that purchase. These parcels could be aggregated valuation. by summing their values But the average value of different parcels though the number of parcels ovmed varied a inheritance, marriage to get and an overall in this area varied "remarkably little," even lot."*^ A roughly uniform price of land in a given region does not seem odd to us. We hve in a market economy where arbitrage and other market goods and services into a narrow range. than others, but markets tend to bring Roman land prices have been the could have result all activities Some prices approach uniformity more completely prices together. come about by of chance. Far more tend to bring prices for similar Remarkably small local variation in accident, but the uniformity does not appear to likely, it was the result of market exchanges, that is, of purchasers rushing to buy land that was offered cheaply and thinking long about buying expensive land. "" CIL 1 1,1 Of course, land is not homogeneous, and there 147; R. Duncan-Jones, Structure and Scale in the 26 is no reason Roman Economy to expect the price (1990), 127. of all land even result in a local area to be the same. Local variation, of market conditions rather than of traditional or Senators' land-holdings routinely adjacent to his main from inheritance and neither traditional estate at were valued Tifumum to consohdate marriage."*^ As productive asset of ancient economy of pre-industrial Rome was Britain ritual forces.'*'' in monetary terms. Phny bought land the scattered parcels he had acquired before, Pliny's purchases and bound by inahenabOity rules allocated were subject however, appears to be the show that land nor centrally directed. The primary by the market. Landed to ownership was more restrictive rules estates in the market than those of ancient Rome. Limits to a Market It is a common view that prices may not hold in any real market. not only apart, but uncoordinated. even today. As a but that is result, should be equal in a market. But the law of one price in modem markets, For example, residual "The various regions may be costly transportation keeps prices oil is in a heavy and costly common market over long periods same slow speed similar. Transport, even when as goods in transit. There cheap, was slow, hiformation was no way P. W. de Neeve, 'The Price of Agricultural Land Opus 4 {\9i5), 77-109. in Roman Italy traveled at for arbitrage to bring prices together in short periods, perhaps even in one to three years. If there ^' to transport not the case in periods of one to three years."^' Most traded goods in the early Roman Empire were the Even Economy was a market, the levels and the Problem of Economic Rationalism', "*£/;. 3.19.2-3. ''''G.J. Stigler and R. A. Sherwin, 'The Extent of the Market', Journal of Law and Economics 28 (1985), 576. 27 . in different regions should not have differed from each other very need not have moved together in any given month or even The market conditions under which prices tended the early Roman much on year. to a common value were of all goods to be uniform across the extensive from is Roman Empire. The no reason speed Rome to Egypt was highly variable, judging by the delays correspond to a fulfilled in Empire. The rate of interest, as noted above, was similar across the whole Empire. The price of land was similar in a local region. But there traveled average, but they new emperor. The delay could be as short, as in at to expect prices which news changing dates to a few weeks, but it averaged over a month, hi the winter, the news could take far longer to cross the sea, but there enough surviving evidence evidence in is to confinn the expected seasonal pattern, is not even though the scattered consistent with such a seasonal pattem.^° Arbitrage could not have equalized prices Rome and Egypt in any short period. Surviving prices also tend to be for places that were accessible by water. Ships could carry goods across the Mediterranean and up over land. rivers, Roman roads were not primarily everywhere. but approximation, the were was hard and expensive for the transport Wagonsoff the roads moved with result is that inland locations it less firmly to carry them of goods, and they did not go far greater effort and diminished connected to the general market. Roman market for bulk commodities extended only slightly speed.^' To a The first beyond where ships could go, although high-value goods could travel to land-locked destinations. In Vindolanda, an amiy camp at Hadrian's Wall, '''' Duncan-Jones, Structure and Scale ^' R. W. Bulliet, in the The Camel and the Wheel it is not surprising that there Roman Economy, (\975). 28 9-1 1 was little market activity, camp was connected although accounts there were kept in denarii, showing that the other markets, even if not very closely.^' (ancient Kellis), 300 of touch with those The 4"" to century accounts at the Dakhleh Oasis km from the Nile and far later, report valuations of bulk commodities out in the Mediterranean economy. The accounts clearly considered different crops as fungible, but "did not go so far as imposing any standard accounting across the whole of the account."^^ In addition to geographical limitations, a market market economy, all limited in its internal extent. transactions need not be market exchanges. In fact, of an economy composed entirely of market exchanges. market exchanges are the modal economic economies do not channel economic is activity in the all it is in a hard to conceive A market economy is one in which interaction, but even full-blown modem market transactions through markets. Eisner calculated that one-third of United States today takes place within households, that householding or reciprocal Even activity.^'' Taxes also are large in is, in modem societies, typically reaching one-third of marketed output in advanced industrial societies. Yet these clearly are market economies. They acquire by the prominence of market exchanges enterprises A. K. and in transactions which comparison with ancient between unrelated private people and in the economy as a whole. These are Rome must be made. and Letters on the Roman Frontier: Vindolanda and its People (1998); A. K. 'New Writing Tablets from Vindolanda,' Britannia 28 (1996). The Kellis Agricultural Account Book (1997), 57-62. Bowman, Bowman not by the universality of market exchanges, but and by the importance of these transactions the dimensions along " this attribute, J. Life D. Thomas, 5' R. Bagnall, '"' R. Eisner, The Total Incomes System of Accounts (1989), 26. 29 In modem, industrial economies, almost no one produces the food that he or she eats or the clothes that he or she wears. In an agricultural economy, far more than one-third of economic of the would be activity Roman Empire was engaged half of production not carried mean that was almost carried all farni's activities many of these in farming, then on by householding, it is If about 75 percent of the population not unreasonable to suppose that over rather than by market exchanges. This does fanners were autarchic and isolated from market forces, while the surplus to feed urban dwellers each on within households. was produced by a minority of farms. were devoted to maintaining its It The workforce. means that most of historical question is farms were engaged in buying and selling produce, even if these how exchanges provided only a small part of the farm's income. This biased. is an exceedingly difficult We are much more likely to have records of farms that were engaged in economic exchanges than those that were not, activities. all question to answer, particularly since our sources are if only The farms whose records have were engaged in because the autarchic farm had no need to record svirvived, however, market exchanges, as described tell a uniform story. These farms earlier. This point about the bias of our records can be turned on was only a minority of all productive activity, it was It is interaction in "literate more humble Romans. more unfortunate to left not unfair to say that market exchange Rome," even though It it may have been would be a mistake its head. Although market activity mode of activity of "literate the dominant Rome." People who had some wealth and education and market contexts. records were was less the all throw the baby out with the bath water. operating in dominant mode of apparent in the daily lives of to ignore these less fortunate 30 its Roman history Romans, but even is written abnost exclusively from literate records of various sorts. For the people exchange was a Finally, who left these records, market way of life. markets are not outside society. They determined by society. Not all are, as Polanyi stated, embedded in society, market economies are the same even today, as even a casual comparison of Japan and the United States suggests.^^ Economic exchanges did not dominate the intellectual hfe of Rome, and there were modem economics. no academic analyses of these exchanges akin But economic exchanges were an omnipresent aspect of urban life, to and they seem also to have been part of hfe in the countryside as well. They were an integral part of the arrangements that enabled parts Rome to grow to a rrdlhon inhabitants and that knit the many of the early Empire together. Conclusion -; I have compared the economy of the early economic integration described economic integration the literature Roman Empire with the three by Polanyi and made testable by Pryor. The modal form of was market exchange. This observation does not appear on ancient Rome, but the generalization from forms of specific examples is controversial in problematical. Confrontation of economic exchange with other forms of integration shows however that the only form that could have I have argued aUowed fiorther that the the early Roman Empire to economy of the early " P. Temin, albeit imperfectly coordinated ones. 'Is It The early Roman Empire was a market Roman Empire Kosher to Talk about Culture' Journal of Economic History 57 , 31 was ftmction. economy. Market exchange was ubiquitous, and market prices moved together of markets, it in ways typical did not have the (1997). market economy of elementary economics textbooks, but economy seen in other advanced it did have the type of market agricultural economies. There was not a single empire-wide market for all goods, but local markets were connected together around the Mediterranean. Transportation and communication took time, and the discipline of the market was loose. between even far-flung parts of the early Rome had an economic But there were Roman Empire. many economic Finley was connections exactly wrong; ancient system that was an enormous conglomeration of interdependent markets. 32 56^5 033 Date Due MIT LIBRARIES 3 9080 02246 2490 I iiniltiiJmiiiiiiiUbWJiH