Oxford Studies on the Roman Economy – serie

The use of formal modelling and computational simulation in studies of the Roman economy has become more common over the last decade. But detailed critical evaluations of this innovative approach are still missing and much needed. What kinds of insights about the Roman economy can it lead to that could not have been obtained through more established approaches, and how do simulation methods constructively enhance research processes in Roman Studies?This edited volume addresses this need through critical discussion and convincing examples. It presents the Roman economy as a highly complex system, traditionally studied through critical examinations of material and textual sources, and understood through a wealth of diverging theories. A key contribution of simulation lies in its ability to formally represent diverse theories of Roman economic phenomena, and test them against empirical evidence. Critical simulation studies rely on collaboration across Roman data, theory, and method specialisms, and can constructively enhance multivocality of theoretical debates of the Roman economy. This potential is illustrated, avoiding computational and mathematical language, through simulation studies of a wealth of Roman economic phenomena: from maritime trade and terrestrial transport infrastructures, through the economic impacts of the Antonine Plague and demography, to local cult economies and grain trade.Through these examples and discussions, this volume aims to provide the common ground, guidance, and inspiration needed to make simulation methods part of the tools of the trade in Roman Studies, and to allow them to make constructive contributions to our understanding of the Roman economy.

This interdisciplinary edited volume presents twelve papers by Roman historians and archaeologists, discussing the interconnected relationship between religion and the Roman economy over the period c. 500 BC to AD 350. The connection between Roman religion and the economy has largely been ignored in work on the Roman economy, but this volume explores the many complex ways in which economic and religious thinking and activities were interwoven, from individuals to institutions. The broad geographic and chronological scope of the volume engages with a notable variety of evidence: epigraphic, archaeological, historical, papyrological, and zooarchaeological. In addition to providing case studies that draw from the rich archaeological, documentary, and epigraphic evidence, the volume also explores the different and sometimes divergent pictures offered by these sources (from discrepancies in the cost of religious buildings, to the tensions between piety and ostentatious donation). The edited collection thus bridges economic, social, and religious themes.The volume provides a view of a society in which religion had a central role in economic activity on an institutional to individual scale. The volume allows an evaluation of impact of that activity from both financial and social viewpoints, providing a new perspective on Roman religion - a perspective to which a wide range of archaeological and documentary evidence, from animal bone to coins and building costs, has contributed. As a result, this volume not only provides new information on the economy of Roman religion: it also proposes new ways of looking at existing bodies of evidence.

While both economic history and frontier archaeology have been mainstays of Roman studies for decades, the two fields rarely intersect in their research agendas and methods. In addition, the prevailing model of Roman taxes and trade, which views the Roman world as a core-periphery system that prioritized the economic success of the Mediterranean over the supposed destitution of frontier zones, no longer stands up to archaeological and historical scrutiny. Offering a detailed rebuttal, The Economic Lives of Roman Frontiers unites the two traditions of economic and frontier studies and examines comparatively for the first time the economic lives of Roman frontier zones across the Empire from ca. 30 BC to AD 300.Drawing upon the substantial amount of archaeological and textual data that exist from frontier zones, along with recent theoretical and methodological advances in economic studies, the essays in this volume explore the economic activity of Roman frontier zones to understand how regional variation in practice and experience shaped and contributed to the wider imperial economy. Fourteen chapters covering different regions present different aspects of economic history, using archaeological, epigraphical, and historical evidence to demonstrate that Roman frontiers could have vibrant economies that contributed to both local and Empire-wide patterns of growth and development. The contributors explore central themes like the roles of the Roman military in economic life, the exploitation of natural resources, the variety of economic agents in frontier regions, and the contribution of frontier regions to taxation revenue, especially through customs applied to trans-frontier trade. Taken as a whole, these essays intentionally investigate heterogeneity rather than an all-encompassing model and foreground regional and chronological variation.

André Tchernia is one of the leading experts on amphorae as a source of economic history, a pioneer of maritime archaeology, and author of a wealth of articles on Roman trade, notably the wine trade. This book brings together the author's previously published essays, updated and revised, with recent notes and prefaced with an entirely new synthesis of his views on Roman commerce with a particular emphasis on the people involved in it.The book is divided into two main parts. The first is a general study of the structure of Roman trade: Landowners and traders, traders' fortunes, the matter of the market, the role of the state, and dispatching what is required. It tackles the recent debates on Roman trade and Roman economy, providing, original and convincing answers.The second part of the book is a selection of 14 of the author's published papers. They range from discussions of general topics such as the ideas of crisis and competition, the approvisioning of Ancient Rome, trade with the East, to more specialized studies, such as the interpretation of the 33 AD crisis. Overall, the book contains a wealth of insights into the workings of ancient trade and expertly combines discussion of the material evidence-especially of amphorae and wrecks-with the prosopographical approach derived from epigraphic, papyrological and historical data.

Explanation of the success and failure of the Roman economy is one of the most important problems in economic history. As an economic system capable of sustaining high production and consumption levels, it was unparalleled until the early modern period.This volume focuses on how the institutional structure of the Roman Empire affected economic performance both positively and negatively. An international range of contributors offers a variety of approaches that together enhance our understanding of how different ownership rights and various modes of organization and exploitation facilitated or prevented the use of land and natural resources in the production process. Relying on a large array of resources - literary, legal, epigraphic, papyrological, numismatic, and archaeological - chapters address key questions regarding the foundations of the Roman Empire's economic system. Questions of growth, concentration and legal status of property (private, public, or imperial), the role of the state, content and limitations of rights of ownership, water rights and management, exploitation of indigenous populations, and many more receive new and original analyses that make this book a significant step forward to understanding what made the economic achievements of the Roman empire possible.

This volume, featuring sixteen contributions from leading Roman historians and archaeologists, sheds new light on approaches to the economic history of urban craftsmen and traders in the Roman world, with a particular emphasis on the imperial period. Combining a wide range of research traditions from all over Europe and utilizing evidence from Italy, the western provinces, and the Greek-speaking east, this edited collection is divided into four sections. It first considers the scholarly history of Roman crafts and trade in the nineteenth and twentieth centuries, focusing on Germany and the Anglo-Saxon world, and on Italy and France. Chapters discuss how scholarly thinking about Roman craftsmen and traders was influenced by historical and intellectual developments in the modern world, and how different (national) research traditions followed different trajectories throughout the nineteenth and twentieth centuries. The second section highlights the economic strategies of craftsmen and traders, examining strategies of long-distance traders and the phenomenon of specialization, and presenting case studies of leather-working and bread-baking. In the third section, the human factor in urban crafts and trade-including the role of apprenticeship, gender, freedmen, and professional associations-is analysed, and the volume ends by exploring the position of crafts in urban space, considering the evidence for artisanal clustering in the archaeological and papyrological record, and providing case studies of the development of commercial landscapes at Aquincum on the Danube and at Sagalassos in Pisidia.

This volume presents fourteen papers by Roman archaeologists and historians discussing approaches to the economic history of Pompeii, and the role of the Pompeian evidence in debates about the Roman economy. Four themes are discussed. The first of these is the position of Pompeii and its agricultural environment, discussing the productivity and specialization of agriculture in the Vesuvian region, and the degree to which we can explain Pompeii's size and wealth on the basis of the city's economic hinterland. A second issue discussed is what Pompeians got out of their economy: how well-off were people in Pompeii? This involves discussing the consumption of everyday consumer goods, analyzing archaeobotanical remains to highlight the quality of Pompeian diets, and discussing what bone remains reveal about the health of the inhabitants of Pompeii. A third theme is economic life in the city: how are we to understand the evidence for crafts and manufacturing? How are we to assess Pompeii's commercial topography? Who were the people who actually invested in constructing shops and workshops? In which economic contexts were Pompeian paintings produced? Finally, the volume discusses money and business: how integrated was Pompeii into the wider world of commerce and exchange, and what can the many coins found at Pompeii tell us about this? What do the wax tablets found near Pompeii tell us about trade in the Bay of Naples in the first century AD? Together, the chapters of this volume highlight how Pompeii became a very rich community, and how it profited from its position in the centre of the Roman world.

This volume presents a collection of studies focussing on population and settlement patterns in the Roman empire in the perspective of the economic development of the Mediterranean world between 100 BC and AD 350. The analyses offered here highlight the issues of regional and temporal variation in Italy, Spain, Britain, Egypt, Crete, and Asia Minor from classical Greece to the early Byzantine period. The chapters fall into two main groups, the first dealing with the evidence for rural settlement, as revealed by archaeological field surveys, and the attendant methodological problems of extrapolating from that evidence a view of population; and the second with city populations and the phenomenon of urbanization. They proceed to consider hierarchies of settlement in the characteristic classical pattern of city plus territory, and the way in which those entities are defined from the highest to the lowest level: the empire as 'city of Rome plus territory', then regional and local hierarchies, and, more precisely, the identity and the nature of the 'instruments' which enable them to function in economic cohesion.

This volume is a collection of studies which presents new analyses of the nature and scale of Roman agriculture in the Mediterranean world from c. 100 BC to AD 350. It provides a clear understanding of the fundamental features of Roman agricultural production through studying the documentary and archaeological evidence for the modes of land exploitation and the organisation, development of, and investment in this sector of the Roman economy. Moving substantially beyond the simple assumption that agriculture was the dominant sector of the ancient economy, the volume explores what was special and distinctive about it, especially with a view of its development and integration during a period of expansion and prosperity across the empire. The papers exemplify a range of possible approaches to studying and, within limits, quantifying aspects of Roman agricultural production, marshalling a large quantity of evidence, chiefly archaeological and papyrological, to address important questions of the organisation and performance of this sector in the Roman world.

In this volume, Philip Kay examines economic change in Rome and Italy between the Second Punic War and the middle of the first century BC. He argues that increased inflows of bullion, in particular silver, combined with an expansion of the availability of credit to produce significant growth in monetary liquidity. This, in turn, stimulated market developments, such as investment farming, trade, construction, and manufacturing, and radically changed the composition and scale of the Roman economy. Using a wide range of evidence and scholarly investigation, Kay demonstrates how Rome, in the second and first centuries BC, became a coherent economic entity experiencing real per capita economic growth. Without an understanding of this economic revolution, the contemporaneous political and cultural changes in Roman society cannot be fully comprehended or explained.

This volume presents eighteen papers by leading Roman historians and archaeologists discussing trade in the Roman Empire during the period c.100 BC to AD 350. It focuses especially on the role of the Roman state in shaping the institutional framework for trade within and outside the empire, in taxing that trade, and in intervening in the markets to ensure the supply of particular commodities, especially for the city of Rome and for the army. As part of a novel interdisciplinary approach to the subject, the chapters address its myriad facets on the basis of broadly different sources of evidence: historical, papyrological, and archaeological. They are grouped into three sections, covering institutional factors (taxation, legal structures, market regulation, financial institutions); evidence for long-distance trade within the empire in wood, stone, glass, and pottery; and trade beyond the frontiers, with the east (as far as China), India, Arabia, the Red Sea, and the Sahara. Rome's external trade with realms to the east emerges as being of particular significance, but it is in the eastern part of the empire itself where the state appears to have adapted the mechanisms of taxation in collaboration with the elite holders of wealth to support its need for revenue. On the other hand, the price of that collaboration, which was in effect a fiscal partnership, ultimately led in the longer term in slightly different forms in the east and the west to a fundamental change in the political character of the empire.

Investment in capital, both physical and financial, and innovation in its uses are often considered the linchpin of modern economic growth, while credit and credit markets now seem to determine the wealth - as well as the fate - of nations. Yet was it always thus? The Roman economy was large, complex, and sophisticated, but in terms of its structural properties did it look anything like the economies we know and are familiar with today? Through consideration of the allocation and uses of capital and credit and the role of innovation in the Roman world, the individual essays comprising this volume go straight to the heart of the matter, exploring such questions as how capital in its various forms was generated, allocated, and employed in the Roman economy; whether the Romans had markets for capital goods and credit; and whether investment in capital led to innovation and productivity growth. Their authors consider multiple aspects of capital use in agriculture, water management, trade, and urban production, and of credit provision, finance, and human capital, covering different periods of Roman history and ranging geographically across Italy and elsewhere in the Roman world. Utilizing many different types of written and archaeological evidence, and employing a range of modern theoretical perspectives and methodologies, the contributors, an expert international team of historians and archaeologists, have produced the first book-length contribution to focus exclusively on (physical and financial) capital in the Roman world; a volume that is aimed not only at specialists in the field, but also at economic historians and archaeologists specializing in other periods and places.

This volume presents a systematic and fresh interpretation of a mid-second-century AD papyrus - the so-called Muziris papyrus - which preserves on its two sides fragments of a unique pair of documents: on one side, a loan agreement to finance a commercial enterprise to South India and, on the other, an assessment of the fiscal value of a South Indian cargo imported on a ship named the Hermapollon. The two texts, whose informative potential has long been underexploited, clarify several aspects of the early Roman Empire's trade with South India, including transport logistics, financial and legal elements in the loan agreement funding the commercial enterprise, the trade goods included in the South Indian cargo, and the technicalities of calculating and collecting Roman customs duties on the Indian imports. This study also considers imperial fiscal policy as it related to the South Indian trade, the overall evolution of Rome's trade relations with South India, the structure and organization of South Indian trade stakeholders, and the role played by private tax-collectors. The in-depth analysis sheds new light on this important sector of the Roman economy during the first two centuries AD in two innovative ways: through a balanced consideration of South Indian sources and data, and by drawing comparisons with the pepper trade from late antiquity, the Middle Ages, and early modernity, resulting in a longue durée perspective on the western trade in South Indian pepper.

This volume, featuring sixteen contributions from leading Roman historians and archaeologists, sheds new light on approaches to the economic history of urban craftsmen and traders in the Roman world, with a particular emphasis on the imperial period. Combining a wide range of research traditions from all over Europe and utilizing evidence from Italy, the western provinces, and the Greek-speaking east, this edited collection is divided into four parts. It first considers the scholarly history of Roman crafts and trade in the nineteenth and twentieth centuries, focusing on Germany and the Anglo-Saxon world, and on Italy and France. Chapters discuss how scholarly thinking about Roman craftsmen and traders was influenced by historical and intellectual developments in the modern world, and how different (national) research traditions followed different trajectories throughout the nineteenth and twentieth centuries. The second part highlights the economic strategies of craftsmen and traders, examining strategies of long-distance traders and the phenomenon of specialization, and presenting case studies of leather-working and bread-baking. In the third part, the human factor in urban crafts and trade--including the role of apprenticeship, gender, freedmen, and professional associations--is analysed, and the volume ends by exploring the position of crafts in urban space, considering the evidence for artisanal clustering in the archaeological and papyrological record, and providing case studies of the development of commercial landscapes at Aquincum on the Danube and at Sagalassos in Pisidia.

The recycling and reuse of materials and objects were extensive in the past, but have rarely been embedded into models of the economy; even more rarely has any attempt been made to address the scale of these practices. Recent developments, including the use of large datasets, computational modelling, and high-resolution analytical chemistry are increasingly offering the means to reconstruct recycling and reuse, and even to approach the thorny issue of quantification. This volume is the first to bring together these new approaches, and the first to present a consideration of recycling and reuse in the Roman economy, taking into account a range of materials and using a variety of methodological approaches. It presents integrated, cross-referential evidence for the recycling and reuse of textiles, papyrus, statuary and building materials, amphorae, metals, and glass, and examines significant questions about organization, value, and the social meaning of recycling.

Coin Hoards and Hoarding in the Roman World presents fourteen chapters from an interdisciplinary group of Roman numismatists, historians, and archaeologists, discussing coin hoarding in the Roman Empire from c. 30 BC to AD 400. The book illustrates the range of research themes being addressed by those connected with the Coin Hoards of the Roman Empire Project, which is creating a database of all known Roman coin hoards from Augustus to AD 400. The volume also reflects the range of the Project's collaborations, with chapters on the use of hoard data to address methodological considerations or monetary history, and coverage of hoards from the west, centre, and east of the Roman Empire, essential to assess methodological issues and interpretations in as broad a context as possible.Chapters on methodology and metrology introduce statistical tools for analysing patterns of hoarding, explore the relationships between monetary reforms and hoarding practices, and address the question of value, emphasizing the need to consider the whole range of precious metal artefacts hoarded. Several chapters present regional studies, from Britain to Egypt, conveying the diversity of hoarding practices across the Empire, the differing methodological challenges they face, and the variety of topics they illuminate. The final group of chapters examines the evidence of hoarding for how long coins stayed in circulation, illustrating the importance of hoard evidence as a control on the interpretation of single coin finds, the continued circulation of Republican coins under the Empire, and the end of the small change economy in Northern Gaul.

Money in Imperial Rome offers an in-depth examination of the institutional framework within which money operated as an economic agent in the Roman empire, emphasising its systemic complexity. Analyses focus on classical Roman law as reflected in the writings of Roman jurists from the second and early-third centuries AD. The legal sources are augmented with documentary materials, which give independent evidence of actual practice, and with Jewish legal sources, which give evidence of a separate contemporary legal tradition. The work promotes Keynesian claims for the endogenous nature of money and adopts approaches advanced by new institutional economics (NIE), while its innovative contribution is in suggesting a complexity-oriented approach to understanding the conceptual framework that dictated the use of money in private transactions. Money is a complex phenomenon in the sense that it allows for new patterns of activity to be created by individuals, who adjust their use of it to the continuously evolving system in which they operate.The book is divided into four parts. The first part is introductory. The second part traces a line of thought consistent in legal developments that regulated exchange, which perceived money as a unique phenomenon, different from all other items; therefore, specific rules were applied to money and a special role was allocated to it in defining the status of the parties. This is detectable for price (pretium) in the Roman contract for sale (emptio venditio), remuneration (merces) in the Roman contract for lease and hire (locatio conductio), and Jewish legal rules regarding sales conducted via a mode of acquisition known as 'acquisition by drawing' (qinyan meshikha). The third part examines money as a financial tool. It observes the various, innovative ways Romans used the instrument of interest. Then follows a discussion of regulations regarding interest-bearing deposits, its flexible application by individuals, and the interconnected dynamics within and between three legal traditions operating under Roman regime: Roman, Jewish, and Egyptian-Hellenistic laws. Investigation then moves to credit money in the Roman world and its capacity to increase the money supply. The fourth part offers a summary of the work and some conclusions.

The spread of Roman coins and their imitations, from Ireland to Thailand, reaches well beyond a modern political map of the Roman provinces. Roman Coin Hoards Across Frontiers provides a broad survey of hoarding of Roman coins beyond the Roman Empire from c. 30 BC to AD 518 and its relevance to our understanding of the commercial, political, and cultural connections between Rome and its neighbours, near and far. Written by nineteen international scholars, it draws on data gathered for the Coin Hoards of the Roman Empire Project, an online database cataloguing all known Roman coin hoards. The volume starts with select studies on aspects of deposition within the Empire, followed by regional analyses covering Southern Scandinavia, Germany, and Eastern Europe, as well as the eastern part of the Roman Empire and its adjacent regions, from the Caucasus up to India. The last section looks outside the Roman hoard evidence itself, offering insights from a later period in the Viking north and from metallurgy. The concluding chapter provides an analysis of the key literary textual evidence for the export of coin outside the Empire. By studying the full reach of Roman material culture beyond the frontiers through the lens of coin hoards, this book reveals the nature of Roman imperialism, the importance of commerce, and the significance of borders.

This collection of essays is the first volume in a new series, Oxford Studies on the Roman Economy. Edited by the series editors, it focuses on the economic performance of the Roman empire, analysing the extent to which Roman political domination of the Mediterranean and north-west Europe created the conditions for the integration of agriculture, production, trade, and commerce across the regions of the empire. Using the evidence of both documents and archaeology, the contributors suggest how we can derive a quantified account of economic growth and contraction in the period of the empire's greatest extent and prosperity.

This volume presents a collection of studies focussing on population and settlement patterns in the Roman empire in the perspective of the economic development of the Mediterranean world between 100 BC and AD 350. The analyses offered here highlight the issues of regional and temporal variation in Italy, Spain, Britain, Egypt, Crete, and Asia Minor from classical Greece to the early Byzantine period. The chapters fall into two main groups, the first dealing with the evidence for rural settlement, as revealed by archaeological field surveys, and the attendant methodological problems of extrapolating from that evidence a view of population; and the second with city populations and the phenomenon of urbanization. They proceed to consider hierarchies of settlement in the characteristic classical pattern of city plus territory, and the way in which those entities are defined from the highest to the lowest level: the empire as 'city of Rome plus territory', then regional and local hierarchies, and, more precisely, the identity and the nature of the 'instruments' which enables them to function in economic cohesion.

This innovative monograph series reflects a vigorous revival of interest in the ancient economy, focusing on the Mediterranean world under Roman rule (c.100 BC to AD 350). Carefully quantified archaeological and documentary data will be integrated to help ancient historians, economic historians, and archaeologists think about economic behaviour collectively rather than from separate perspectives. The volumes will include a substantial comparative element and thus be of interest to historians of other periods and places. The use of stone in vast quantities is a ubiquitous and defining feature of the material culture of the Roman world. In this volume, Russell provides a new and wide-ranging examination of the production, distribution, and use of carved stone objects throughout the Roman world, including how enormous quantities of high-quality white and polychrome marbles were moved all around the Mediterranean to meet the demand for exotic material.The long-distance supply of materials for artistic and architectural production, not to mention the trade in finished objects like statues and sarcophagi, is one of the most remarkable features of the Roman world. Despite this, it has never received much attention in mainstream economic studies. Focusing on the market for stone and its supply, the administration, distribution, and chronology of quarrying, and the practicalities of stone transport, Russell offers a detailed assessment of the Roman stone trade and how the relationship between producer and customer functioned even over considerable distances.

The World of the 'Fullo' takes a detailed look at the fullers, craftsmen who dealt with high-quality garments, of Roman Italy. Analyzing the social and economic worlds in which the fullers lived and worked, it tells the story of their economic circumstances, the way they organized their workshops, the places where they worked in the city, and their everyday lives on the shop floor and beyond.Through focusing on the lower segments of society, Flohr uses everyday work as the major organizing principle of the narrative: the volume discusses the decisions taken by those responsible for the organization of work, and how these decisions subsequently had an impact on the social lives of people carrying out the work. It emphasizes how socio-economic differences between cities resulted in fundamentally different working lives for many of their people, and that not only were economic activities shaped by Roman society, they in turn played a key role in shaping it. Using an in-depth and qualitative analysis of material remains related to economic activities, with a combined study of epigraphic and literary records, this volume portrays an insightful view of the socio-economic history of urban communities in the Roman world.

This volume is a collection of studies which presents new analyses of the nature and scale of Roman agriculture in the Mediterranean world from c. 100 BC to AD 350. It provides a clear understanding of the fundamental features of Roman agricultural production through studying the documentary and archaeological evidence for the modes of land exploitation and the organisation, development of, and investment in this sector of the Roman economy. Moving substantially beyond the simple assumption that agriculture was the dominant sector of the ancient economy, the volume explores what was special and distinctive about it, especially with a view of its development and integration during a period of expansion and prosperity across the empire. The papers exemplify a range of possible approaches to studying and, within limits, quantifying aspects of Roman agricultural production, marshalling a large quantity of evidence, chiefly archaeological and papyrological, to address important questions of the organisation and performance of this sector in the Roman world.

Harvesting the Sea provides the first systematic treatment of the exploitation of various marine resources, such as large-scale fishing, fish salting, salt and purple-dye production, and oyster and fish-farming, in the Roman world and its role within the ancient economy. Bringing together literary, epigraphic, and legal sources, with a wealth of archaeological data collected in recent years, Marzano shows that these marine resources were an important feature of the Roman economy and, in scope and market-oriented production, paralleled phenomena taking place in the Roman agricultural economy on land. The book also examines the importance of technological innovations, the organization of labour, and the use of the existing legal framework in defence of economic interests against competitors for the same natural resource.

This collection of essays is the first volume in a new series, Oxford Studies on the Roman Economy. Edited by the series editors, it focuses on the economic performance of the Roman empire, analysing the extent to which Roman political domination of the Mediterranean and north-west Europe created the conditions for the integration of agriculture, production, trade, and commerce across the regions of the empire. Using the evidence of both documents and archaeology, the contributors suggest how we can derive a quantified account of economic growth and contraction in the period of the empire's greatest extent and prosperity.

In this volume, Philip Kay examines economic change in Rome and Italy between the Second Punic War and the middle of the first century BC. He argues that increased inflows of bullion, in particular silver, combined with an expansion of the availability of credit to produce significant growth in monetary liquidity. This, in turn, stimulated market developments, such as investment farming, trade, construction, and manufacturing, and radically changed the composition and scale of the Roman economy. Using a wide range of evidence and scholarly investigation, Kay demonstrates how Rome, in the second and first centuries BC, became a coherent economic entity experiencing real per capita economic growth. Without an understanding of this economic revolution, the contemporaneous political and cultural changes in Roman society cannot be fully comprehended or explained.