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v0.1.1485
NotesHistoryTopic 6.3Demographic pressure, famine and plague
Back to History Topics
6.3.14 min read

Demographic pressure, famine and plague

IB History • Unit 6

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Contents

  • A world running out of room
  • The Great Famine, 1315–17
  • The Black Death and its shockwaves

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The big idea: By 1300 Europe was fuller than it had ever been. Centuries of good weather and steady farming had let the population roughly triple since the year 1000.

But the land could not feed everyone forever. The people had multiplied faster than the food could — and that gap set the stage for catastrophe.

For three hundred years life had been getting better. Warm summers, new ploughs and cleared forests meant more fields, more grain and more mouths that could be fed.

By around 1300 Europe held perhaps 75 to 80 million people. Villages had spread onto poor, stony hillsides that no one had bothered to farm before.

That was the problem. The best land was already taken, and the marginal land gave thin harvests.

With so many people and so little spare food, a single bad year could tip whole regions into hunger.

The Malthusian trap: The thinker Thomas Malthus later described this danger. Population grows quickly, but food supply grows only slowly — so when people outrun their food, famine, disease and death crash the population back down.

Historians call the crowded, hungry Europe of 1300 a society at its Malthusian limit — living right on the edge of what the land could support.
  • Overpopulation — around 75–80 million people by 1300, the most Europe had ever held
  • Shrinking farms — land was divided among more heirs, so each family held less
  • Exhausted soil — fields farmed for centuries without rest yielded less each year
  • No safety margin — grain stores were thin, so one failed harvest meant hunger
Remember this: Europe in 1300 was not poor because of one disaster — it was fragile because there were too many people for the land. That fragility is the root cause of everything that follows in this topic.

The blow fell first from the sky. Around 1300 the climate began to turn colder and wetter — the start of a long cool spell historians call the Little Ice Age.

Then, in 1315, the rains simply would not stop.

The rain that would not end: In spring 1315 it began to pour across northern Europe and barely let up for months. Fields turned to swamp, seed rotted in the ground, and the grain that did grow could not ripen.

The harvests of 1315, 1316 and 1317 all failed. It was the worst run of harvest failures in living memory.
1

Harvests fail

Endless rain and cold ruined the grain crop three years running (1315–17). There was simply not enough food to go round.

2

Prices soar

With grain scarce, its price rocketed — in places four to eight times normal. The poor could no longer afford bread at all.

3

Animals die

Soaked fields and disease killed livestock too. Losing oxen and sheep meant losing ploughing power, milk and wool as well as meat.

4

People starve

Weakened bodies fell to hunger and to diseases that prey on the starving. Perhaps 5–10% of northern Europe's people died.

Rain → ruined harvests → sky-high prices → mass starvation.

The suffering was terrible. Chroniclers describe people eating dogs, cats and the seed grain they should have saved for planting — which only guaranteed hunger the next year.

There were even reports of desperate crime and, in the worst-hit places, rumours of cannibalism.

Why the famine mattered so much: The Great Famine proved the Malthusian point in the cruellest way. A crowded society with no spare food had nothing to fall back on when the weather turned.

Just as important, it left the survivors weakened and malnourished — a population less able to resist the far greater killer that was coming.

Underlying weakness (before 1315)

  • Too many people for the land (Malthusian limit)
  • Thin grain stores and no safety margin
  • Soil exhausted by centuries of farming

The trigger (1315–17)

  • The Little Ice Age brings colder, wetter weather
  • Three years of relentless rain ruin the harvests
  • Grain prices soar and livestock die of disease
Link the two, don't separate them: Strong answers connect cause and trigger: the famine was so deadly because Europe was already overpopulated. Climate was the spark; overpopulation was the dry tinder it landed on.

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The greatest catastrophe: A generation after the famine, a far deadlier disaster arrived — the Black Death.

Between 1347 and 1351 it killed an estimated one-third to one-half of the entire population of Europe. Nothing in recorded history had killed on this scale.

The disease began far to the east, in Central Asia, and travelled west along the busy trade routes that linked Asia to Europe. It reached the Black Sea, then Italian trading ships carried it to Sicily in 1347.

From there it spread across the whole continent in under four years.

Form of plagueHow it spreadWhat it did
BubonicBites of fleas carried on black ratsPainful swellings (buboes); killed most of those infected
PneumonicCoughs and breath, person to personAttacked the lungs; spread fast and was almost always fatal

People had no idea what caused it or how to stop it. There was no medicine that worked and no way to treat the sick.

Whole villages emptied. In many towns there were not enough living to bury the dead, and bodies were tipped into mass graves.

Looking for someone to blame: Terror pushed people to desperate acts. Bands of flagellants marched from town to town, whipping their own bodies to try to win God's forgiveness.

Worst of all, many blamed the Jews, spreading the lie that they had poisoned the wells. This led to horrific pogroms — massacres of Jewish communities across the Rhineland and beyond.
  • Flagellants — processions of self-whippers, believing the plague was God's punishment
  • Scapegoating — blaming outsiders for a disaster no one understood
  • Pogroms — thousands of Jews murdered on the false charge of poisoning wells
  • Panic and flight — the rich fled the towns, often carrying the plague with them
Institutions in crisis: Mass death broke the everyday machinery of society. So many priests died tending the sick that the Church struggled to hold services or perform funerals — and some replacements were poorly trained.

Manors lost their peasants, courts lost their officials, and families were shattered. The routines that held medieval life together simply stopped working.

The Church was shaken in a deeper way too. It had promised protection through prayer, yet the plague killed the faithful and the clergy alike.

For some this deepened their devotion; for others it planted a quiet doubt about the Church's power that would echo for generations.

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6.1.1The organisation of medieval society
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6.2.1Agriculture, trade and commerce
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