The History of the World · Grades 10–13 · College · University
The Black Death — A World Event, 1346–1353
History · Level band: Grades 10–13 · College · University
English edition — the language editions of the history classes are outstanding and will follow the site’s translation pattern; none is fabricated here.
§1 — A WORLD EVENT, NOT A EUROPEAN ONE
DOCUMENTED. Between 1346 and 1353 a single pandemic of plague crossed the entire connected Old World — from the Tian Shan to Iceland, from Novgorod to Cairo and Mecca — killing, at the ranges this class will show and argue, between a third and a half of the people in most of the lands it struck, in about seven years. It was not the first plague pandemic (the Justinianic plague of 541 onward stands before it) and not the last visitation of its own (it returned, in wave after wave, for more than three centuries). But its first passage was the greatest mortality event of the recorded medieval world, and it was one event: the same bacterial strain, carried along the same roads and sea-lanes that carried the silk, the grain, the pilgrims and the letters of the Mongol peace. Europe's name for it — the Black Death — is a later coinage, and Europe's experience of it, the best documented, is only one province of it. This class follows the disease, not the textbook map: Central Asia first, then the Black Sea, the Mediterranean of both its shores, the Muslim world in its own chronicles, Latin Europe in its registers, and the far east at the weight its record can bear.
§2 — THE ROAD FROM CENTRAL ASIA
DOCUMENTED-SCIENCE — an origin question answered. The pathogen is Yersinia pestis, the plague bacillus, identified beyond dispute by ancient DNA recovered from the teeth of its fourteenth-century victims (from 2011 onward). Where this pandemic began stood open for centuries; it stands answered now at the weight modern science can give. In the Chüy Valley near Lake Issyk-Kul, in today's Kyrgyzstan, two cemeteries of a Nestorian Christian trading community — Kara-Djigach and Burana — keep tombstones inscribed in Syriac that name the dead, their year, and often their cause; in 1338–39 the stones suddenly multiply, and the cause they name is "pestilence." In 2022, Spyrou, Slavin, Krause and colleagues (Nature) published the DNA: the Y. pestis strain in those graves is the direct ancestor of the strain that devastated three continents from 1346 — sitting at the base of the Black Death's family tree, in a region where plague lives permanently in the marmot populations of the Tian Shan. The dead of Issyk-Kul were Silk Road people, buried by a Silk Road church, in the decade before the pandemic; the road that had carried their trade carried their disease. What remains reconstructed rather than proven is the fine order of the routes west — the class marks that level where it matters (§3).
DOCUMENTED. The passage west, as the records of each region date it: the steppe and the Black Sea ports by 1346; Constantinople in 1347; Messina in Sicily in October 1347, in the Sicilian Franciscan Michele da Piazza's chronicle, with the Genoese galleys whose crews were dying at their oars; Alexandria late in 1347; Gaza, Jerusalem, Damascus, Aleppo and Antioch through 1348; Cairo from the autumn of 1348, at its height over that winter; Mecca in 1349, carried by the pilgrimage itself; Tunis, Fez and the Maghreb across 1348–49, moving in part with the Marinid army's retreat from Kairouan. In Latin Europe: Marseille and the Rhône, Florence (Boccaccio's city, and his Decameron is the plague's most famous literary frame), Avignon — where the Pope sat, consecrated the Rhône itself as a burial ground when the cemeteries failed, and lost his court around him — Paris, then London in the autumn of 1348, the English counties and Wales through 1349, Ireland, Scotland, Scandinavia by ship to Norway in 1349, Iceland spared in this first passage, and the Rus' lands last — Pskov and Novgorod in 1352, Moscow in 1353, where the grand prince and his sons died of it. Seven years, one disease, every shore of the known world.
§3 — CAFFA: THE FAMOUS STORY AT ITS TRUE WEIGHT
DEBATED — one source, not an eyewitness. Every account of the Black Death repeats the story of Caffa: that in 1346–47 the Golden Horde's army, besieging the Genoese port of Caffa in the Crimea and dying of plague in its camp, catapulted its dead over the walls; that the plague took the city; and that Genoese galleys fleeing Caffa carried the disease to Constantinople, Sicily and the West — the first act of biological warfare, and the door by which plague entered Europe. The story rests on one text: Gabriele de' Mussi, a notary of Piacenza in Italy, who never left Piacenza and never saw Caffa. Mark Wheelis (2002), in the medical literature, argued the episode was epidemiologically plausible and could have worked as told. Hannah Barker's study of the Black Sea grain trade (Speculum, 2021), working from the records of people who were in the Black Sea — Genoese administrators, Venetian diplomats, Byzantine chroniclers, Mamluk merchants — found none of them telling it; showed that de' Mussi ran two different sieges of Caffa together; and reconstructed the actual mechanism in the documents: plague crossed the Black Sea slowly, over more than a year, in the ordinary traffic of the grain trade — delayed in 1346 precisely because war embargoes had stopped the grain ships, and released in 1347 when peace let them sail again, rats, fleas and bacteria in the cargoes. The class therefore prints the catapults as what they are: a famous single-source story, possibly true in part, not how the record shows the pandemic travelling. The truth the documents carry is larger and colder: no one had to aim the plague. The ordinary commerce of the connected world — praised in the Steppe class for the peace that made it safe — delivered it everywhere, on a hundred ships, along a hundred roads.
§4 — THE DEAD, BY REGION: THE RANGES AND THEIR CONFLICTS
The numbers stand in conflict, and the conflict is the honest state of the record. No census counted the medieval world's dead. What exist are contemporary computations, chroniclers' figures, and modern reconstructions from registers — manorial rolls, tax lists, clerical institutions, wills — each with a different base. This class prints the principals, with their makers named, and does not average them.
DOCUMENTED — the contemporary official count. By 1351 the agents of Pope Clement VI had computed the dead of Christian Europe at 23,840,000 — against a pre-plague European population of roughly 75 million, a mortality of about 31 per cent. It is the nearest thing the event has to a contemporary official figure, and it already exceeds a quarter of a continent.
DEBATED — the high reconstruction. Ole J. Benedictow, the pandemic's modern historian (The Black Death 1346–1353: The Complete History, 2004; The Complete History of the Black Death, revised 2021), assembling hundreds of local mortality studies, argues for about 60 per cent of Europe — some 50 million people — region after region, he holds, returning figures between a half and two-thirds, and holds 60 per cent cautious. Other demographers find his extrapolations from documented to undocumented regions too bold.
DEBATED — the middle trend and the regional spread. Much recent scholarship (summarised by Philip Daileader) trends nearer 45–50 per cent for Europe as a whole — with the spread doing the real work: parts of Mediterranean Europe (Tuscany, Catalonia, southern France) at the top of the range, 75–80 per cent suggested for the hardest-hit districts; England and Germany as wholes nearer 20–40 per cent by varying reconstructions (England's population fell from roughly 4.5–5 million before the plague to about 2.5–3 million by the 1370s, across repeated visitations). Florence lost, by its chroniclers and the modern studies, about half its people in 1348; Venice about three-fifths across the first passage; London's plague cemeteries — East Smithfield, dug in emergency in 1348–49 and excavated in our time — hold their thousands in ordered rows, the archaeology correcting the chroniclers' pits of chaos: even at the height, London buried its dead in consecrated ground, in graves, with care.
DOCUMENTED-SCIENCE — the caution against uniformity. A 2022 study of pollen in sediment cores from 261 sites across Europe (Izdebski and colleagues, Nature Ecology & Evolution) read the plague's blow in the landscape itself — fields kept, fields abandoned — and found it savage in some regions (Scandinavia, France, central Italy, Greece) and surprisingly light in others (parts of Iberia, Ireland, and eastern Europe, where agriculture grew straight through the pandemic years). The pandemic was immensely destructive in some areas and had a far lighter touch in others: any single percentage for "Europe" is a summary of a map, and the map is uneven. The class carries the range — from Clement's 31 per cent to Benedictow's 60, with most current work between 40 and 50 — as the sourced state of the question.
The Muslim world, at its own record. Michael Dols's The Black Death in the Middle East (1977) remains the standard study. Cairo — then among the largest cities on earth — lost on the order of a third of its people in the first passage; whole quarters stood as depopulated ruins for a century after, and al-Maqrizi's chronicle records the machinery of death overwhelming the city: funerals by the hundred a day in the provincial towns, inheritance offices buried in the estates of whole families dead together, farmland around the capital untilled. In Upper Egypt, the tax registers Dols reports collapse from 6,000 taxpayers at Asyut before the plague to 116 after — a fiscal record that counts flight as well as death, and is printed here as exactly that. For Syria the chroniclers' daily figures stand in §5 at their class: testimony, not counts. The Middle East's total dead have no Benedictow; the honest statement at the record is that Egypt and Syria were struck at European scale — a third and upward in the cities — and that their recovery, unlike England's, did not come (§6).
China — DEBATED, and no figure printed. Yuan-dynasty records report great epidemics in north China in the 1330s, 1340s and 1350s, and China's registered population fell steeply across the Mongol century. Whether those epidemics were this plague, and how much of the fall was disease rather than the Mongol conquest wars, the Yellow River floods, and the collapse of registration itself, is genuinely contested among historians of China — the classic Western account assumed the plague; much current sinology is more cautious. This class records the epidemics as documented, the identification as DEBATED, and prints no Chinese death toll, because the record does not hold one. Persia and the steppe lands, struck between Issyk-Kul and the Black Sea, stand at the same honesty: devastated in the Persian chronicles' testimony, uncounted in any register the scholarship can use.
§5 — THE PEOPLES STRUCK, IN THEIR OWN RECORDS: DAMASCUS, 1348
DOCUMENTED — Ibn Battuta's testimony. The traveller Ibn Battuta came into Syria in 1348 ahead of the plague and walked through it. His Rihla gives the pandemic its greatest single eyewitness sequence outside Boccaccio. At Gaza he found the city largely emptied by death. At Jerusalem the plague had passed before he arrived, and nearly every scholar and notable he had known there on his earlier visit was dead. At Damascus he was present at the answer the city made: when the deaths mounted — he reports them at 2,000 a day at the height, a chronicler's figure carried here as his testimony, not as a count — the viceregent proclaimed three days of fasting, and on the last night of July 1348 the whole city processed to the Mosque of the Footprints outside the walls: the emirs and soldiers, the judges and scholars, the people barefoot, and — Ibn Battuta records it as the heart of the scene — the Jews with their Torah and the Christians with their Gospel, all of them together behind the Muslims with the Qur'an, weeping and supplicating in the dark before dawn. He reports that God lightened the plague in Damascus thereafter, and sets beside it the figures he was given for Cairo — 21,000, in one telling 24,000, dead a day — figures beyond any city's daily capacity to bury, carried here, as he carried them, as what a stunned world said to a traveller, at testimony's weight and no higher. The Damascene chronicler Ibn Kathir, who lived it in the same city, records the same processions and the same terror from inside the scholarly class; and the plague treatises the Muslim scholars of Syria and Spain wrote in these years — on plague as martyrdom for the believer, on the duty neither to flee a stricken land nor to enter one — are the struck civilisation thinking, in its own genres, at the height of the dying. No equivalent of Europe's pogroms (§6) stands in Dols's record of the Muslim world: the difference is part of the record, and this class prints it as such.
DOCUMENTED — the Latin voices, briefly. Europe's own records answer at the same human register: Boccaccio's Florence, where "the reverend authority of the laws, both human and divine, fell into ruin" and the dead went to the trenches in layers; the Sienese chronicler Agnolo di Tura, who buried his five children with his own hands and wrote that no one wept, for all expected to die — "and so many died that all believed it was the end of the world"; Guy de Chauliac, the Pope's physician at Avignon, who caught the plague, recovered, and wrote its clinical description knowing his profession had had nothing to offer. The struck peoples' own words, in every language the pandemic crossed, are the first evidence of this class; the statistics of §4 stand behind them, and not the other way round.
§6 — WHAT IT CHANGED: LABOUR, LAND, FAITH, AND THE PRICE OF EVERYTHING
DOCUMENTED — labour and the law. The dead left the living scarce, and scarcity repriced the world. Harvest wages in England doubled within years; labourers demanded, and got, payment the pre-plague world had never offered — and the state answered with coercion: the Ordinance of Labourers (1349) and the Statute of Labourers (1351) froze wages at the rates of 1346, compelled the able-bodied to work, and forbade alms to those who would not; France's crown issued like measures in 1351. The statutes failed as economics and succeeded as grievance: a generation of enforcement, fines and resentment runs from them toward the English rising of 1381 and the French Jacquerie of 1358, in whose causes the plague settlement stands documented among others. In western Europe, lords competing for tenants commuted labour services for rents, and serfdom withered across the following century; east of the Elbe the long movement ran the other way, toward the tightened "second serfdom" of the early modern centuries — a contrast the scholarship states, whose full causes (markets, states, demography's local doses among them) remain DEBATED.
DOCUMENTED — the price of everything. In the first shock, grain prices spiked where the harvest hands were dead. Then the deeper arithmetic took hold: with a third to a half of mouths gone and the same land, rents and land values fell and stayed low for a hundred years; wages in real terms rose for those who lived; the goods of the dead flooded the markets of the living — houses, clothes, plate, livestock cheap; luxuries paradoxically dearer to make and cheaper to buy; whole villages at the margin abandoned, their fields going back to pasture and wood — England's deserted medieval villages are counted in the thousands, most of them plague-era and post-plague deaths of places, not single events. The survivors, on average, ate better meat, drank better ale and wore better cloth than their grandparents. The plague redistributed wealth downward for a century — by the grave. The divergence, DOCUMENTED at its comparison: Stuart Borsch's study of Egypt and England side by side draws the long contrast the record supports — England's scarcity raised its labourers, while Egypt, whose agriculture hung on collectively maintained irrigation that the dying and the flight broke, entered a rural decline from which the Mamluk order never recovered; the same bacteria, opposite centuries, because the societies it struck were differently built. There is no single "effect of the Black Death"; there are the effects, society by society, and they are printed severally or not honestly at all.
DOCUMENTED — faith, in both directions at once. The Church the survivors inherited had buried a third of its own clergy — the parish priests who stayed at their posts died at rates the institution lists make grim reading — and the responses ran opposite ways in the same towns: an endowment boom of chantries and masses for the dead, the cults of the plague saints Sebastian and Roch, art that would not stop painting death (the danse macabre becomes the age's signature in the following century); and beside it a bitterness at clergy who had fled, at a Church that had grown rich on the wills of the terrified, which runs in the record forward toward Wyclif and beyond. In 1348–49 the flagellant movement crossed Germany and the Low Countries — thousands processing town to town, scourging themselves in public rite to turn away the wrath of God — until Clement VI condemned it in October 1349. The Pope's record in the plague is better than the age's: from Avignon he protected the Jews (below), bought a cemetery when Avignon's overflowed, and kept his physician's clinical account in his own household.
EXHIBIT — the libel, labelled false, and the massacres that were real. One response stands apart, and is printed as an exhibit of a lie and a record of a crime. Across Latin Europe in 1348–49 spread the accusation that the Jews had caused the plague by poisoning wells. It was false — plague is a bacterium carried by fleas, its victims of every faith, and Pope Clement VI said so at the time, in bulls of 1348 pointing out that Jews died of the plague like everyone else and that the plague raged in lands where no Jews lived, and forbidding their murder on pain of excommunication. The lie killed anyway, because it licensed taking the accused people's property and cancelling debts owed them: at Strasbourg on 14 February 1349 the city burned its Jewish community — some two thousand people by the chroniclers' figure — in their own cemetery, before the plague had even reached the city; at Mainz the community fought and died, and set its own quarter alight; Cologne, Worms and hundreds of smaller places followed, in the worst wave of anti-Jewish massacre in medieval Europe, after which many German cities stood emptied of the communities that had lived in them for centuries. The massacres are DOCUMENTED from the records of the cities that committed them. The accusation that excused them is carried at its class: a false claim, exhibited, and answered by the record — including by the head of the Church that the murderers claimed to serve, at the time. And the contrast of §5 stands beside it in the record: the plague produced processions in Damascus where Jew and Christian prayed behind the Muslim Qur'an-bearers in one company, and massacres in the Rhineland. The difference was not the disease. It was what each world did with its fear, and a history that blurs that difference teaches nothing.
CLAIM — labelled and set aside. That the Black Death single-handedly ended feudalism, caused the Renaissance, or broke the medieval Church are slogans, not findings; each names a real long change and assigns it one cause against the record. They are carried here at the class CLAIM, where the student can see them labelled, and the documented changes above — labour law, land, wages, devotion, persecution, and the state — are what this class teaches in their place.
Sources
The science: Spyrou, Andreides, Slavin, Krause et al., "The source of the Black Death in fourteenth-century central Eurasia," Nature 607 (2022) — the Issyk-Kul cemeteries and the ancestral strain · Izdebski et al., "Palaeoecological data indicate the Black Death was not a uniform demographic impact," Nature Ecology & Evolution (2022) — the pollen evidence. The struck peoples' own records: Ibn Battuta, The Travels (Rihla), Syria and Egypt, 1348–49 · Ibn Kathir's Damascus record · al-Maqrizi, al-Suluk · Giovanni Boccaccio, Decameron, Introduction to the First Day · Agnolo di Tura del Grasso, Sienese chronicle · Guy de Chauliac, Chirurgia Magna · Michele da Piazza on Messina · Gabriele de' Mussi, Istoria de morbo (Caffa, at its class). Scholarship: Michael W. Dols, The Black Death in the Middle East (1977) · Stuart J. Borsch, The Black Death in Egypt and England (2005) · Ole J. Benedictow, The Black Death 1346–1353 (2004) and The Complete History of the Black Death (2021) · Hannah Barker, "Laying the Corpses to Rest: Grain, Embargoes, and Yersinia pestis in the Black Sea, 1346–48," Speculum 96 (2021) · Mark Wheelis, "Biological Warfare at the 1346 Siege of Caffa," Emerging Infectious Diseases (2002) · Robert S. Gottfried, The Black Death (the Clement VI computation) · Claudia Maria Tresso on Ibn Battuta's "Prayer of Damascus" (2021).
Read beside this class: The Steppe World — Scythians, Khans, and the Thousand Years of Tartary (the Pax Mongolica whose roads the plague travelled) · The Medieval Worlds, 1000–1500 — The Crusades Whole · Medieval Africa and Song China — Empires of Gold, Print and Examination · The Chronology — The Whole History in Order of Time.
Record: THE_MEDIEVAL_WORLDS_RESEARCH_2026-10-28.md (study_materials/world_history), §8 — classes carried unchanged; mortality printed as a shown conflict (Clement VI's agents · Benedictow · the 45–50% trend · the 2022 pollen caution), never averaged; China carried DEBATED with no toll printed; the Caffa story at single-source weight; the well-poisoning libel exhibited as false and answered from the record of its own time.