Author: D. Wengrow
Publisher: Oxford University Press
ISBN: 0199699429
Category : History
Languages : en
Pages : 238
Book Description
A vivid new account of the 'birth of civilization' in ancient Egypt and Mesopotamia where many of the foundations of modern life were laid
What Makes Civilization?
Author: D. Wengrow
Publisher: Oxford University Press
ISBN: 0199699429
Category : History
Languages : en
Pages : 238
Book Description
A vivid new account of the 'birth of civilization' in ancient Egypt and Mesopotamia where many of the foundations of modern life were laid
Publisher: Oxford University Press
ISBN: 0199699429
Category : History
Languages : en
Pages : 238
Book Description
A vivid new account of the 'birth of civilization' in ancient Egypt and Mesopotamia where many of the foundations of modern life were laid
What Makes Civilization?
Author: David Wengrow
Publisher: OUP Oxford
ISBN: 0191613495
Category : Social Science
Languages : en
Pages : 240
Book Description
The targeted destruction of ancient sites and monuments in the Middle East provokes widespread outrage in the West. But what is our connection to the ancient Near East? In this updated edition of What Makes Civilization? archaeologist David Wengrow investigates the origins of farming, writing, and cities in ancient Mesopotamia (Iraq) and Egypt, and explores the connections between these two civilizations. It is the story of how people first created kingdoms and monuments to the gods and, just as importantly, how they pioneered everyday practices that we might now take for granted, such as familiar ways of cooking food and keeping the house and body clean. Wengrow asks why these ancient cultures, where so many features of modern life originated, have come to symbolize the remote and the exotic. Today, perhaps more than ever, he argues, the beleaguered cultural heritage of ancient Egypt and Mesopotamia stands as a warning for the future. A warning of the sacrifices people will tolerate to preserve their chosen form of life; of the potential for unfettered expansion that exists within any cultural tradition; and of blood perhaps yet to be spilled, on the altar of a misguided notion of civilization.
Publisher: OUP Oxford
ISBN: 0191613495
Category : Social Science
Languages : en
Pages : 240
Book Description
The targeted destruction of ancient sites and monuments in the Middle East provokes widespread outrage in the West. But what is our connection to the ancient Near East? In this updated edition of What Makes Civilization? archaeologist David Wengrow investigates the origins of farming, writing, and cities in ancient Mesopotamia (Iraq) and Egypt, and explores the connections between these two civilizations. It is the story of how people first created kingdoms and monuments to the gods and, just as importantly, how they pioneered everyday practices that we might now take for granted, such as familiar ways of cooking food and keeping the house and body clean. Wengrow asks why these ancient cultures, where so many features of modern life originated, have come to symbolize the remote and the exotic. Today, perhaps more than ever, he argues, the beleaguered cultural heritage of ancient Egypt and Mesopotamia stands as a warning for the future. A warning of the sacrifices people will tolerate to preserve their chosen form of life; of the potential for unfettered expansion that exists within any cultural tradition; and of blood perhaps yet to be spilled, on the altar of a misguided notion of civilization.
The Fabric of Civilization
Author: Virginia Postrel
Publisher: Basic Books
ISBN: 1541617614
Category : History
Languages : en
Pages : 320
Book Description
From Paleolithic flax to 3D knitting, explore the global history of textiles and the world they weave together in this enthralling and educational guide. The story of humanity is the story of textiles -- as old as civilization itself. Since the first thread was spun, the need for textiles has driven technology, business, politics, and culture. In The Fabric of Civilization, Virginia Postrel synthesizes groundbreaking research from archaeology, economics, and science to reveal a surprising history. From Minoans exporting wool colored with precious purple dye to Egypt, to Romans arrayed in costly Chinese silk, the cloth trade paved the crossroads of the ancient world. Textiles funded the Renaissance and the Mughal Empire; they gave us banks and bookkeeping, Michelangelo's David and the Taj Mahal. The cloth business spread the alphabet and arithmetic, propelled chemical research, and taught people to think in binary code. Assiduously researched and deftly narrated, The Fabric of Civilization tells the story of the world's most influential commodity.
Publisher: Basic Books
ISBN: 1541617614
Category : History
Languages : en
Pages : 320
Book Description
From Paleolithic flax to 3D knitting, explore the global history of textiles and the world they weave together in this enthralling and educational guide. The story of humanity is the story of textiles -- as old as civilization itself. Since the first thread was spun, the need for textiles has driven technology, business, politics, and culture. In The Fabric of Civilization, Virginia Postrel synthesizes groundbreaking research from archaeology, economics, and science to reveal a surprising history. From Minoans exporting wool colored with precious purple dye to Egypt, to Romans arrayed in costly Chinese silk, the cloth trade paved the crossroads of the ancient world. Textiles funded the Renaissance and the Mughal Empire; they gave us banks and bookkeeping, Michelangelo's David and the Taj Mahal. The cloth business spread the alphabet and arithmetic, propelled chemical research, and taught people to think in binary code. Assiduously researched and deftly narrated, The Fabric of Civilization tells the story of the world's most influential commodity.
Energy and Civilization
Author: Vaclav Smil
Publisher: MIT Press
ISBN: 0262536161
Category : Science
Languages : en
Pages : 564
Book Description
A comprehensive account of how energy has shaped society throughout history, from pre-agricultural foraging societies through today's fossil fuel–driven civilization. "I wait for new Smil books the way some people wait for the next 'Star Wars' movie. In his latest book, Energy and Civilization: A History, he goes deep and broad to explain how innovations in humans' ability to turn energy into heat, light, and motion have been a driving force behind our cultural and economic progress over the past 10,000 years. —Bill Gates, Gates Notes, Best Books of the Year Energy is the only universal currency; it is necessary for getting anything done. The conversion of energy on Earth ranges from terra-forming forces of plate tectonics to cumulative erosive effects of raindrops. Life on Earth depends on the photosynthetic conversion of solar energy into plant biomass. Humans have come to rely on many more energy flows—ranging from fossil fuels to photovoltaic generation of electricity—for their civilized existence. In this monumental history, Vaclav Smil provides a comprehensive account of how energy has shaped society, from pre-agricultural foraging societies through today's fossil fuel–driven civilization. Humans are the only species that can systematically harness energies outside their bodies, using the power of their intellect and an enormous variety of artifacts—from the simplest tools to internal combustion engines and nuclear reactors. The epochal transition to fossil fuels affected everything: agriculture, industry, transportation, weapons, communication, economics, urbanization, quality of life, politics, and the environment. Smil describes humanity's energy eras in panoramic and interdisciplinary fashion, offering readers a magisterial overview. This book is an extensively updated and expanded version of Smil's Energy in World History (1994). Smil has incorporated an enormous amount of new material, reflecting the dramatic developments in energy studies over the last two decades and his own research over that time.
Publisher: MIT Press
ISBN: 0262536161
Category : Science
Languages : en
Pages : 564
Book Description
A comprehensive account of how energy has shaped society throughout history, from pre-agricultural foraging societies through today's fossil fuel–driven civilization. "I wait for new Smil books the way some people wait for the next 'Star Wars' movie. In his latest book, Energy and Civilization: A History, he goes deep and broad to explain how innovations in humans' ability to turn energy into heat, light, and motion have been a driving force behind our cultural and economic progress over the past 10,000 years. —Bill Gates, Gates Notes, Best Books of the Year Energy is the only universal currency; it is necessary for getting anything done. The conversion of energy on Earth ranges from terra-forming forces of plate tectonics to cumulative erosive effects of raindrops. Life on Earth depends on the photosynthetic conversion of solar energy into plant biomass. Humans have come to rely on many more energy flows—ranging from fossil fuels to photovoltaic generation of electricity—for their civilized existence. In this monumental history, Vaclav Smil provides a comprehensive account of how energy has shaped society, from pre-agricultural foraging societies through today's fossil fuel–driven civilization. Humans are the only species that can systematically harness energies outside their bodies, using the power of their intellect and an enormous variety of artifacts—from the simplest tools to internal combustion engines and nuclear reactors. The epochal transition to fossil fuels affected everything: agriculture, industry, transportation, weapons, communication, economics, urbanization, quality of life, politics, and the environment. Smil describes humanity's energy eras in panoramic and interdisciplinary fashion, offering readers a magisterial overview. This book is an extensively updated and expanded version of Smil's Energy in World History (1994). Smil has incorporated an enormous amount of new material, reflecting the dramatic developments in energy studies over the last two decades and his own research over that time.
Civilization
Author: Niall Ferguson
Publisher: Penguin
ISBN: 1101548029
Category : History
Languages : en
Pages : 432
Book Description
From the bestselling author of The Ascent of Money and The Square and the Tower “A dazzling history of Western ideas.” —The Economist “Mr. Ferguson tells his story with characteristic verve and an eye for the felicitous phrase.” —Wall Street Journal “[W]ritten with vitality and verve . . . a tour de force.” —Boston Globe Western civilization’s rise to global dominance is the single most important historical phenomenon of the past five centuries. How did the West overtake its Eastern rivals? And has the zenith of Western power now passed? Acclaimed historian Niall Ferguson argues that beginning in the fifteenth century, the West developed six powerful new concepts, or “killer applications”—competition, science, the rule of law, modern medicine, consumerism, and the work ethic—that the Rest lacked, allowing it to surge past all other competitors. Yet now, Ferguson shows how the Rest have downloaded the killer apps the West once monopolized, while the West has literally lost faith in itself. Chronicling the rise and fall of empires alongside clashes (and fusions) of civilizations, Civilization: The West and the Rest recasts world history with force and wit. Boldly argued and teeming with memorable characters, this is Ferguson at his very best.
Publisher: Penguin
ISBN: 1101548029
Category : History
Languages : en
Pages : 432
Book Description
From the bestselling author of The Ascent of Money and The Square and the Tower “A dazzling history of Western ideas.” —The Economist “Mr. Ferguson tells his story with characteristic verve and an eye for the felicitous phrase.” —Wall Street Journal “[W]ritten with vitality and verve . . . a tour de force.” —Boston Globe Western civilization’s rise to global dominance is the single most important historical phenomenon of the past five centuries. How did the West overtake its Eastern rivals? And has the zenith of Western power now passed? Acclaimed historian Niall Ferguson argues that beginning in the fifteenth century, the West developed six powerful new concepts, or “killer applications”—competition, science, the rule of law, modern medicine, consumerism, and the work ethic—that the Rest lacked, allowing it to surge past all other competitors. Yet now, Ferguson shows how the Rest have downloaded the killer apps the West once monopolized, while the West has literally lost faith in itself. Chronicling the rise and fall of empires alongside clashes (and fusions) of civilizations, Civilization: The West and the Rest recasts world history with force and wit. Boldly argued and teeming with memorable characters, this is Ferguson at his very best.
The Book that Made Your World
Author: Vishal Mangalwadi
Publisher: Thomas Nelson
ISBN: 1595554009
Category : Religion
Languages : en
Pages : 466
Book Description
Understand where we came from. Whether you're an avid student of the Bible or a skeptic of its relevance, The Book That Made Your World will transform your perception of its influence on virtually every facet of Western civilization. Indian philosopher Vishal Mangalwadi reveals the personal motivation that fueled his own study of the Bible and systematically illustrates how its precepts became the framework for societal structure throughout the last millennium. From politics and science, to academia and technology, the Bible's sacred copy became the key that unlocked the Western mind. Through Mangalwadi's wide-ranging and fascinating investigation, you'll discover: What triggered the West's passion for scientific, medical, and technological advancement How the biblical notion of human dignity informs the West's social structure and how it intersects with other worldviews How the Bible created a fertile ground for women to find social and economic empowerment How the Bible has uniquely equipped the West to cultivate compassion, human rights, prosperity, and strong families The role of the Bible in the transformation of education How the modern literary notion of a hero has been shaped by the Bible's archetypal protagonist Journey with Mangalwadi as he examines the origins of a civilization's greatness and the misguided beliefs that threaten to unravel its progress. Learn how the Bible transformed the social, political, and religious institutions that have sustained Western culture for the past millennium, and discover how secular corruption endangers the stability and longevity of Western civilization. Endorsements: “This is an extremely significant piece of work with huge global implications. Vishal brings a timely message.” (Ravi Zacharias, author, Walking from East to West and Beyond Opinion) “In polite society, the mere mention of the Bible often introduces a certain measure of anxiety. A serious discussion on the Bible can bring outright contempt. Therefore, it is most refreshing to encounter this engaging and informed assessment of the Bible’s profound impact on the modern world. Where Bloom laments the closing of the American mind, Mangalwadi brings a refreshing optimism.” (Stanley Mattson, founder and president, C. S. Lewis Foundation) “Vishal Mangalwadi recounts history in very broad strokes, always using his cross-cultural perspectives for highlighting the many benefits of biblical principles in shaping civilization.” (George Marsden, professor, University of Notre Dame; author, Fundamentalism and American Culture)
Publisher: Thomas Nelson
ISBN: 1595554009
Category : Religion
Languages : en
Pages : 466
Book Description
Understand where we came from. Whether you're an avid student of the Bible or a skeptic of its relevance, The Book That Made Your World will transform your perception of its influence on virtually every facet of Western civilization. Indian philosopher Vishal Mangalwadi reveals the personal motivation that fueled his own study of the Bible and systematically illustrates how its precepts became the framework for societal structure throughout the last millennium. From politics and science, to academia and technology, the Bible's sacred copy became the key that unlocked the Western mind. Through Mangalwadi's wide-ranging and fascinating investigation, you'll discover: What triggered the West's passion for scientific, medical, and technological advancement How the biblical notion of human dignity informs the West's social structure and how it intersects with other worldviews How the Bible created a fertile ground for women to find social and economic empowerment How the Bible has uniquely equipped the West to cultivate compassion, human rights, prosperity, and strong families The role of the Bible in the transformation of education How the modern literary notion of a hero has been shaped by the Bible's archetypal protagonist Journey with Mangalwadi as he examines the origins of a civilization's greatness and the misguided beliefs that threaten to unravel its progress. Learn how the Bible transformed the social, political, and religious institutions that have sustained Western culture for the past millennium, and discover how secular corruption endangers the stability and longevity of Western civilization. Endorsements: “This is an extremely significant piece of work with huge global implications. Vishal brings a timely message.” (Ravi Zacharias, author, Walking from East to West and Beyond Opinion) “In polite society, the mere mention of the Bible often introduces a certain measure of anxiety. A serious discussion on the Bible can bring outright contempt. Therefore, it is most refreshing to encounter this engaging and informed assessment of the Bible’s profound impact on the modern world. Where Bloom laments the closing of the American mind, Mangalwadi brings a refreshing optimism.” (Stanley Mattson, founder and president, C. S. Lewis Foundation) “Vishal Mangalwadi recounts history in very broad strokes, always using his cross-cultural perspectives for highlighting the many benefits of biblical principles in shaping civilization.” (George Marsden, professor, University of Notre Dame; author, Fundamentalism and American Culture)
Civilization and Its Contents
Author: Bruce Mazlish
Publisher: Stanford University Press
ISBN: 0804750831
Category : History
Languages : en
Pages : 204
Book Description
"Civilization" is a constantly invoked term. It is used by both politicians and scholars. How useful, in fact, is this term? Civilization and Its Contents traces the origins of the concept in the eighteenth century. It shows its use as a colonial ideology, and then as a support for racism. The term was extended to a dead society, Egyptian civilization, and was appropriated by Japan, China, and Islamic countries. This latter development lays the groundwork for the contemporary call for a "dialogue of civilizations." The author proposes instead that today the use of the term "civilization" has a global meaning, with local variants recognized as cultures. It may be more appropriate, however, to abandon the name "civilization" and to focus on a new understanding of the civilizing process.
Publisher: Stanford University Press
ISBN: 0804750831
Category : History
Languages : en
Pages : 204
Book Description
"Civilization" is a constantly invoked term. It is used by both politicians and scholars. How useful, in fact, is this term? Civilization and Its Contents traces the origins of the concept in the eighteenth century. It shows its use as a colonial ideology, and then as a support for racism. The term was extended to a dead society, Egyptian civilization, and was appropriated by Japan, China, and Islamic countries. This latter development lays the groundwork for the contemporary call for a "dialogue of civilizations." The author proposes instead that today the use of the term "civilization" has a global meaning, with local variants recognized as cultures. It may be more appropriate, however, to abandon the name "civilization" and to focus on a new understanding of the civilizing process.
Money Changes Everything
Author: William N. Goetzmann
Publisher: Princeton University Press
ISBN: 0691178372
Category : Business & Economics
Languages : en
Pages : 598
Book Description
"[A] magnificent history of money and finance."—New York Times Book Review "Convincingly makes the case that finance is a change-maker of change-makers."—Financial Times In the aftermath of recent financial crises, it's easy to see finance as a wrecking ball: something that destroys fortunes and jobs, and undermines governments and banks. In Money Changes Everything, leading financial historian William Goetzmann argues the exact opposite—that the development of finance has made the growth of civilizations possible. Goetzmann explains that finance is a time machine, a technology that allows us to move value forward and backward through time; and that this innovation has changed the very way we think about and plan for the future. He shows how finance was present at key moments in history: driving the invention of writing in ancient Mesopotamia, spurring the classical civilizations of Greece and Rome to become great empires, determining the rise and fall of dynasties in imperial China, and underwriting the trade expeditions that led Europeans to the New World. He also demonstrates how the apparatus we associate with a modern economy—stock markets, lines of credit, complex financial products, and international trade—were repeatedly developed, forgotten, and reinvented over the course of human history. Exploring the critical role of finance over the millennia, and around the world, Goetzmann details how wondrous financial technologies and institutions—money, bonds, banks, corporations, and more—have helped urban centers to expand and cultures to flourish. And it's not done reshaping our lives, as Goetzmann considers the challenges we face in the future, such as how to use the power of finance to care for an aging and expanding population. Money Changes Everything presents a fascinating look into the way that finance has steered the course of history.
Publisher: Princeton University Press
ISBN: 0691178372
Category : Business & Economics
Languages : en
Pages : 598
Book Description
"[A] magnificent history of money and finance."—New York Times Book Review "Convincingly makes the case that finance is a change-maker of change-makers."—Financial Times In the aftermath of recent financial crises, it's easy to see finance as a wrecking ball: something that destroys fortunes and jobs, and undermines governments and banks. In Money Changes Everything, leading financial historian William Goetzmann argues the exact opposite—that the development of finance has made the growth of civilizations possible. Goetzmann explains that finance is a time machine, a technology that allows us to move value forward and backward through time; and that this innovation has changed the very way we think about and plan for the future. He shows how finance was present at key moments in history: driving the invention of writing in ancient Mesopotamia, spurring the classical civilizations of Greece and Rome to become great empires, determining the rise and fall of dynasties in imperial China, and underwriting the trade expeditions that led Europeans to the New World. He also demonstrates how the apparatus we associate with a modern economy—stock markets, lines of credit, complex financial products, and international trade—were repeatedly developed, forgotten, and reinvented over the course of human history. Exploring the critical role of finance over the millennia, and around the world, Goetzmann details how wondrous financial technologies and institutions—money, bonds, banks, corporations, and more—have helped urban centers to expand and cultures to flourish. And it's not done reshaping our lives, as Goetzmann considers the challenges we face in the future, such as how to use the power of finance to care for an aging and expanding population. Money Changes Everything presents a fascinating look into the way that finance has steered the course of history.
The Dawn of Everything
Author: David Graeber
Publisher: Farrar, Straus and Giroux
ISBN: 0374721106
Category : Social Science
Languages : en
Pages : 384
Book Description
INSTANT NEW YORK TIMES BESTSELLER A dramatically new understanding of human history, challenging our most fundamental assumptions about social evolution—from the development of agriculture and cities to the origins of the state, democracy, and inequality—and revealing new possibilities for human emancipation. For generations, our remote ancestors have been cast as primitive and childlike—either free and equal innocents, or thuggish and warlike. Civilization, we are told, could be achieved only by sacrificing those original freedoms or, alternatively, by taming our baser instincts. David Graeber and David Wengrow show how such theories first emerged in the eighteenth century as a conservative reaction to powerful critiques of European society posed by Indigenous observers and intellectuals. Revisiting this encounter has startling implications for how we make sense of human history today, including the origins of farming, property, cities, democracy, slavery, and civilization itself. Drawing on pathbreaking research in archaeology and anthropology, the authors show how history becomes a far more interesting place once we learn to throw off our conceptual shackles and perceive what’s really there. If humans did not spend 95 percent of their evolutionary past in tiny bands of hunter-gatherers, what were they doing all that time? If agriculture, and cities, did not mean a plunge into hierarchy and domination, then what kinds of social and economic organization did they lead to? The answers are often unexpected, and suggest that the course of human history may be less set in stone, and more full of playful, hopeful possibilities, than we tend to assume. The Dawn of Everything fundamentally transforms our understanding of the human past and offers a path toward imagining new forms of freedom, new ways of organizing society. This is a monumental book of formidable intellectual range, animated by curiosity, moral vision, and a faith in the power of direct action. Includes Black-and-White Illustrations
Publisher: Farrar, Straus and Giroux
ISBN: 0374721106
Category : Social Science
Languages : en
Pages : 384
Book Description
INSTANT NEW YORK TIMES BESTSELLER A dramatically new understanding of human history, challenging our most fundamental assumptions about social evolution—from the development of agriculture and cities to the origins of the state, democracy, and inequality—and revealing new possibilities for human emancipation. For generations, our remote ancestors have been cast as primitive and childlike—either free and equal innocents, or thuggish and warlike. Civilization, we are told, could be achieved only by sacrificing those original freedoms or, alternatively, by taming our baser instincts. David Graeber and David Wengrow show how such theories first emerged in the eighteenth century as a conservative reaction to powerful critiques of European society posed by Indigenous observers and intellectuals. Revisiting this encounter has startling implications for how we make sense of human history today, including the origins of farming, property, cities, democracy, slavery, and civilization itself. Drawing on pathbreaking research in archaeology and anthropology, the authors show how history becomes a far more interesting place once we learn to throw off our conceptual shackles and perceive what’s really there. If humans did not spend 95 percent of their evolutionary past in tiny bands of hunter-gatherers, what were they doing all that time? If agriculture, and cities, did not mean a plunge into hierarchy and domination, then what kinds of social and economic organization did they lead to? The answers are often unexpected, and suggest that the course of human history may be less set in stone, and more full of playful, hopeful possibilities, than we tend to assume. The Dawn of Everything fundamentally transforms our understanding of the human past and offers a path toward imagining new forms of freedom, new ways of organizing society. This is a monumental book of formidable intellectual range, animated by curiosity, moral vision, and a faith in the power of direct action. Includes Black-and-White Illustrations
Dirt
Author: David R. Montgomery
Publisher: Univ of California Press
ISBN: 0520933168
Category : Nature
Languages : en
Pages : 299
Book Description
Dirt, soil, call it what you want—it's everywhere we go. It is the root of our existence, supporting our feet, our farms, our cities. This fascinating yet disquieting book finds, however, that we are running out of dirt, and it's no laughing matter. An engaging natural and cultural history of soil that sweeps from ancient civilizations to modern times, Dirt: The Erosion of Civilizations explores the compelling idea that we are—and have long been—using up Earth's soil. Once bare of protective vegetation and exposed to wind and rain, cultivated soils erode bit by bit, slowly enough to be ignored in a single lifetime but fast enough over centuries to limit the lifespan of civilizations. A rich mix of history, archaeology and geology, Dirt traces the role of soil use and abuse in the history of Mesopotamia, Ancient Greece, the Roman Empire, China, European colonialism, Central America, and the American push westward. We see how soil has shaped us and we have shaped soil—as society after society has risen, prospered, and plowed through a natural endowment of fertile dirt. David R. Montgomery sees in the recent rise of organic and no-till farming the hope for a new agricultural revolution that might help us avoid the fate of previous civilizations.
Publisher: Univ of California Press
ISBN: 0520933168
Category : Nature
Languages : en
Pages : 299
Book Description
Dirt, soil, call it what you want—it's everywhere we go. It is the root of our existence, supporting our feet, our farms, our cities. This fascinating yet disquieting book finds, however, that we are running out of dirt, and it's no laughing matter. An engaging natural and cultural history of soil that sweeps from ancient civilizations to modern times, Dirt: The Erosion of Civilizations explores the compelling idea that we are—and have long been—using up Earth's soil. Once bare of protective vegetation and exposed to wind and rain, cultivated soils erode bit by bit, slowly enough to be ignored in a single lifetime but fast enough over centuries to limit the lifespan of civilizations. A rich mix of history, archaeology and geology, Dirt traces the role of soil use and abuse in the history of Mesopotamia, Ancient Greece, the Roman Empire, China, European colonialism, Central America, and the American push westward. We see how soil has shaped us and we have shaped soil—as society after society has risen, prospered, and plowed through a natural endowment of fertile dirt. David R. Montgomery sees in the recent rise of organic and no-till farming the hope for a new agricultural revolution that might help us avoid the fate of previous civilizations.