Post-classical history

• 1. Introduction

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  Post-classical history names the stretch of time from about 500 CE to about 1450 or 1500 CE, the centuries world historians place between the ancient and the modern. In those roughly thousand years, the world's population broadly doubled, climbing from around 210 million people in 500 to some 461 million by 1500. That growth was anything but smooth. The Plague of Justinian, the Mongol invasions, and the Black Death each cut populations down in sudden, brutal waves. So this period holds a paradox worth sitting with. How does a world that doubles its people keep losing a quarter or half of them in single epidemics? Why do historians reach for so many names for it at once, calling it medieval, post-antiquity, post-ancient, and pre-modern? And what binds together a Chinese silk caravan, a West African gold caravan, and a Polynesian canoe crossing open ocean, when those worlds barely knew each other existed? The answers live in trade, in faith, in disease, and in a quarrel among scholars over whether this era can be told as a single global story at all.

• 2. Naming An Age

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  Post-classical history is a periodization built by historians who take a world history approach, a school that developed during the late 20th and early 21st centuries. The term carries a deliberate purpose outside that field too. It lets scholars sidestep the loaded baggage of words like Middle Ages, Medieval Period, and the Dark Ages. Yet the fix is imperfect, and applying post-classical on a global scale has been called Eurocentric and problematic in its own right.

  Academic publications sometimes treat post-classical and late antiquity as synonyms for the history of Western Eurasia between 250 and 800 CE. The boundaries blur further when you look region by region. The period begins as each area's classical age ends, and those ends do not line up. Han China closed in 220 CE, the Western Roman Empire in 476, the Gupta Empire in 543, and the Sasanian Empire in 651. Within the standard scheme of world history, post-classical is one of five or six major periods, sitting between classical societies and the early modern world.

  World history as a field has grown extensively since the 1980s, yet its energy has gravitated toward the globalization that began around 1500, leaving the earlier centuries mostly framed as a story of Afro-Eurasia. The trouble is the rest of the planet. The Americas had little contact with Afro-Eurasia before the Columbian exchange, which makes a single shared timeline hard to defend. Researchers around 2020 admitted as much, writing that a global history of the period between 500 and 1500 is still wanting, and that historians have only just begun to embark on a global history of the Middle Ages. James Belich, John Darwin, Margret Frenz, and Chris Wickham put the limit plainly. Global history may be boundless, but global historians are not, and it cannot usefully mean the history of everything, everywhere, all the time. The term Middle Ages itself first appears in Latin in the 15th century, coined by scholars who saw the era as a detour away from classical learning.

• 3. The Three Faiths

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  Religion that imagined all humans inside a single universal order had already emerged in the first millennium BCE, most notably with Buddhism. In the millennium that followed, two more universalizing missionary religions joined it, both growing out of Judaism: Christianity and Islam. By the end of the post-classical period these three were widespread and often politically dominant across the Old World.

  Buddhism moved out of India into China, flourished there briefly, then used China as a hub to reach Japan, Korea, and Vietnam. A revival of Confucian thought followed a similar path in the later centuries. Christianity had become the state church of the Roman Empire in 380, and it kept spreading north and east in Europe at the expense of belief systems Christians called pagan. The Crusades carried that ambition into the Middle East. The split between the Catholic Church in the west and the Eastern Orthodox Church in the east opened Eurasia to greater religious and cultural diversity.

  Islam began between 610 and 632 through a series of revelations to Muhammad. It pulled the warring Bedouin clans of the Arabian Peninsula together, and through a rapid run of conquests it reached west across North Africa, the Iberian Peninsula, and parts of West Africa, then east across Persia, Central Asia, India, and Indonesia. Beyond Eurasia, veneration of the supernatural still did political work, articulating world views and shaping foundational myths, as the cosmological narratives of Mesoamerica show. That same Mesoamerican world would soon produce empires that bound faith directly to conquest.

• 4. Roads And Cargo

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  The Silk Road began with the Han dynasty of China, linking it to the Roman Empire and the regions in between. Central Asia sent horses, wool, and jade into China in exchange for silk, while the Romans traded wine for that same Chinese cloth. The route rose and fell repeatedly between the Iron Age and the post-classical era. After one decline, the Han general Ban Chao reopened it across Central Asia during the 1st century. It carried far more than goods, spreading silk, gold, and spices alongside languages, religions, and disease.

  The rise of Islam reshaped the road, as Muslim rulers largely closed it to Christian Europe, cutting Europe off from Asia for centuries. It flowered again in the 13th century under the Mongol Empire, whose conquests brought a stability across Central Asia that one Muslim historian compared to perfect safety, claiming a traveler could carry a golden platter on his head from sunrise to sunset without suffering the least violence. Travelers such as Ibn Battuta, Rabban Bar Sauma, and Marco Polo crossed North Africa and Eurasia freely, and those who wrote of their journeys inspired others. The world historian R. I. Moore went so far as to say that if any single institution made the Eurasian Middle Ages it was pilgrimage. After the 15th century the road faded from regular use, undone by European sea travel around the southern tip of Africa.

  In Africa, the earlier arrival of the camel opened a large trans-Saharan trade that tied Sub-Saharan West Africa to Eurasia. East Africa joined the Indian Ocean network, where Islamic coastal cities like Mombasa and traditional centers such as Great Zimbabwe exported gold, copper, and ivory toward markets in the Middle East and South Asia. From 1100 onward, both Christian Europe and the Islamic world depended on Africa for gold. Far out in the Pacific, the trade told a different story of scale. Polynesian outrigger canoes kept up communication over more than 2,300 miles between Hawaii and Tahiti for centuries, a feat that sustained itself until the network finally dissolved.

• 5. Empire On Horseback

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  The Mongol Empire, alive through the 13th and 14th centuries, was the largest continuous land empire in history. From its origins in the steppes of Central Asia it eventually reached from Central Europe to the Sea of Japan, north into Siberia and south toward the Indian subcontinent, the Iranian Plateau, and as far west as the Levant and Arabia. It grew from nomadic tribes united under Genghis Khan, who was proclaimed ruler of all Mongols in 1206.

  The Battle of Ain Jalut in 1260 marked the high-water point of Mongol conquest, the first time a Mongol advance was ever beaten back in open battle. The empire then strained under disputes over succession among the grandchildren of Genghis Khan, who argued whether the line should pass through his heir Ögedei or through sons such as Tolui, Chagatai, or Jochi. After Möngke Khan died, rival kurultai councils elected the brothers Ariq Böke and Kublai Khan at once, and the two fought the Toluid Civil War. Kublai took power but never fully regained control of the other branches.

  By Kublai's death in 1294 the empire had fractured into four parts: the Golden Horde in the northwest, the Chagatai Khanate in the west, the Ilkhanate in the southwest, and the Yuan dynasty based in modern-day Beijing. In 1304 the three western khanates briefly accepted the nominal suzerainty of the Yuan, which the Han Chinese Ming dynasty overthrew in 1368. The original khanates had all collapsed by 1500, though smaller successor states lasted into the 1700s. Descendants of Chagatai Khan founded the Mughal Empire that ruled much of India in early modern times, a long shadow cast from the steppe.

• 6. The Great Dyings

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  The first plague pandemic, caused by Yersinia pestis, opened with the Plague of Justinian of 541 to 549. Its origin appears to lie in the Tian Shan mountains in Kyrgyzstan, though some historians point to East Africa, and there is no record of such a disease in China before it surfaced at Pelusium in Egypt. A major outbreak in Europe in 542 killed a quarter of the Mediterranean's population. Urban civilizations were massively depopulated while rural societies, though still devastated, suffered fewer social shocks.

  Different authorities answered the dying in ways meant to shield their own power. The Catholic Church in France spoke of healing miracles, while Confucian bureaucrats argued that the sudden deaths of Chinese emperors signaled the loss of a dynasty's Mandate of Heaven, shifting blame from themselves. The loss of manpower in the Byzantine and Sasanian Empires helped open the way for early Muslim conquests. Aftershocks of the Plague of Justinian recurred until around 750, after which many nations recovered.

  Six centuries later a relative of Yersinia pestis returned as the Black Death, striking between 1347 and 1351 and killing somewhere between 25 and 50 percent of populations. It reached Sicily aboard merchant ships crossing the Mediterranean, igniting an epidemic in 1347. The old story that it began in China and rode west with Mongol armies has no concrete evidence behind it, and historians now consider a Chinese origin unlikely given the 5,000-mile journey through sparsely populated Central Asia. Asia did suffer its own 14th-century epidemics. Much of the Delhi Sultanate's army died of sickness on the Deccan Plateau in 1334, and Yuan China recorded a 90 percent death rate in Hebei Province, though surviving accounts describe no symptoms. In Western Europe the loss reshaped labor itself, lifting wage work and pushing slavery, nearly vanished from the continent, back into use as one motive for Portuguese exploration after 1400.

• 7. What Feudal Means

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  Feudalism, in global history, has become a label for almost any agricultural society where central authority broke down and a warrior aristocracy took its place. Such societies leaned on personal bonds with military elites rather than a bureaucracy backed by a professional standing army. The word has been stretched across medieval Europe, the Islamic iqta' system, Indian feudalism, and Heian Japan.

  After the 8th century feudalism grew more common across Europe. Even Byzantium, heir to Roman government, devolved its military duties into themes to raise more soldiers and ships in times of crisis. European feudalism and the Islamic iqta' both rested on landed classes of mounted warriors whose titles came from a monarch or sultan, and that similarity let social structures survive religious upheaval. When the Delhi Sultanate conquered much of India, it raised taxes but largely left local feudal arrangements intact.

  China stands apart from this pattern. Through much of the period, and especially after 1000, it ran a centralized bureaucracy rather than a fragmented warrior order. Local leaders there resisted defining themselves by their current territory, tending instead to dream of reuniting the whole country whenever it broke apart. The usefulness of the term itself is now contested, since the daily workings of feudalism differed sharply between regions. Comparisons between Europe and post-classical Japan have been especially fraught. Some argue that until roughly 1400 Japan balanced decentralized military power with centralized imperial and monastic authority, and that only in the Sengoku period did private military leaders take full control.

• 8. When The Weather Turned

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  The extreme weather events of 536 to 537 were likely set off by the eruption of the Lake Ilopango caldera in El Salvador. Sulfate thrown into the air cooled the globe, triggering migrations and crop failures, and records show the world's average temperature stayed colder for at least a century afterward. This was climate acting as a force on all human populations at once, even where no one understood why the skies had dimmed.

  The Medieval Warm Period, from 950 to 1250, brought warmer summers across much of the Northern Hemisphere, temperatures not surpassed until the global warming of the 20th and 21st centuries. Those warmer, ice-free waters have been credited with letting the Norse colonize Greenland. Beyond Europe the warming showed in higher temperatures in China and in major North American droughts that battered numerous cultures.

  After 1250 glaciers began advancing again in Greenland, disturbing its thermohaline circulation and cooling the whole North Atlantic. By the 14th century Europe's growing season grew unreliable, and in China colder weather pushed the cultivation of oranges southward. The Little Ice Age that followed carried great cultural weight, especially in Europe, and it outlasted the post-classical period entirely, persisting until the Industrial Revolution. Its causes remain unclear, with sunspots, the Earth's orbital cycles, volcanic activity, ocean circulation, and man-made population decline all offered as explanations. That same chill would help erase the Norse colonies in Greenland, lost to Europeans until Danish colonization in the 18th century.