Q0238Potatoes from the Americas helped transform European diets and population growth.
The potato, brought from the Andes, gave Europe a hardy, calorie-rich crop — fuelling population growth and, when it failed, terrible famine.
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Q0238Q0239Sugar did not just sweeten diets; it helped drive Atlantic empires, plantation slavery, global trade routes and fortunes that still shape economies.
A spoonful of sugar feels ordinary, but for centuries it was a luxury crop grown through coerced labour and shipped through global trade networks. It tied kitchens to plantations, ports, banks and empires from the Caribbean to Europe and beyond. The lesson is uncomfortable: everyday appetites can hide whole systems of power.
Q0240The transatlantic slave trade forcibly moved more than 12 million Africans across the Atlantic.
Over some four centuries, the transatlantic slave trade forcibly shipped more than 12 million Africans across the ocean — one of history's gravest crimes.
Q0241The Haitian Revolution created the first Black republic and the first state born from a successful slave revolt.
Beginning in 1791, enslaved Africans in the French colony of Saint-Domingue rose up and, by 1804, defeated colonial armies to found Haiti — the first nation born from a successful slave revolt.
Q0242The American Revolution and French Revolution both reshaped ideas of citizenship, rights, and sovereignty.
The American and French Revolutions, late in the 1700s, spread bold new claims about rights, citizenship and the consent of the governed across the world.
Q0243Germ theory changed medicine by showing that specific invisible organisms can cause disease, making hygiene, sterilisation and vaccination part of modern care.
Before germ theory, disease was often blamed on bad air, imbalance or vague corruption. Showing that microbes could transmit illness gave doctors and public-health workers something concrete to interrupt: dirty instruments, contaminated water, infected wounds and unsafe contact. Its relevance is global because every clinic, kitchen and clean-water system still depends on that insight.
Q0244The 1918 influenza pandemic killed more people than World War I combat.
The 1918 influenza pandemic killed tens of millions worldwide — more than died in the combat of the First World War it followed.
Q0245World War I helped redraw borders and set conditions for many later conflicts.
The First World War toppled empires and redrew borders, especially in Europe and the Middle East — seeding many of the conflicts that followed.
Q0246Women's suffrage was won at different times in different countries, often after decades of organising.
Women won the vote at very different times — New Zealand in 1893, many nations only after 1918 — usually after long, determined campaigns.
Q0247In 1948, Britain's NHS became one of the first systems anywhere to make healthcare free for every citizen — and redefined what people expect from a state.
Before 1948, most people paid doctors directly or relied on charity; a serious illness could bankrupt a family. The NHS flipped the logic: funded by taxation, free at the point of use, available to all. The idea travelled — 'universal healthcare' became a benchmark that countries from Spain to Japan built versions of, and a standard debate everywhere else. Whether or not you live in Britain, the question it raised shapes your politics: is health something you buy, or something you're owed?
Q0248The civil rights movement used protest, law, media, and moral pressure to challenge segregation.
The civil rights movement combined protest, lawsuits, media and moral argument to dismantle legal segregation in the United States.
Q0249The contraceptive pill changed relationships, work, family planning, and women's social freedom.
Approved in 1960, the contraceptive pill let many women control if and when to have children — reshaping education, work and family life.
Q0250The Stonewall uprising became a major symbol in the modern LGBTQ rights movement.
The 1969 Stonewall uprising in New York, when patrons resisted a police raid, became a rallying symbol for the modern LGBTQ rights movement.
Q0411The Apollo Guidance Computer flew astronauts to the Moon with about 4 KB of working memory — your phone has roughly a million times more.
The AGC had about 4 KB of RAM, 72 KB of fixed 'rope core' memory, and ran at roughly 1 MHz — less computing power than a musical greeting card. Yet in 1969 it steered Apollo 11 across 380,000 km, ran the landing radar, and even recovered gracefully from overload alarms minutes before touchdown. The story is not about weak hardware; it is about what disciplined engineering, compact code and ruthless prioritising can do under impossible constraints.
Q0413Cleopatra lived closer in time to the first iPhone than to the building of the Great Pyramid of Giza.
This is a scale-shift fact, not a joke: the Great Pyramid was built around 2560 BC, Cleopatra died in 30 BC, and the first iPhone was released in 2007. Roughly 2,500 years separated Cleopatra from the pyramid, but just over 2,000 years separated her from the smartphone age.
Q0415The Antikythera mechanism was an ancient Greek device that could predict astronomical cycles.
The Antikythera mechanism, a corroded bronze device from around 100 BC, could predict eclipses and planetary positions — an analogue computer two millennia early.
Q0416Paper money was used in China centuries before it appeared in Europe.
China used paper money by the 11th century, centuries before Europe — a leap that required deep trust in a note's promise rather than the metal in a coin.
Q0417The compass was invented in China before it transformed global navigation.
The magnetic compass was devised in China, first for divination, then for navigation — a small needle that eventually let sailors cross open oceans with confidence.
Q0418Gunpowder was first developed in China, then changed warfare across the world.
Chinese alchemists seeking an elixir of life stumbled on gunpowder around the 9th century. Carried west, it reshaped warfare and helped end the age of castles.
Q0419Before standard time zones, towns often set their clocks by local sun time.
Before railways, each town kept its own clock by the local Sun, so noon in one city differed from the next — time was local until travel demanded it be shared.
Q0420Railways helped force countries to standardise time because fast timetables needed more than local sundials and town clocks.
Before railways, many towns kept their own local time by the sun. That worked for walking and horse travel, but not for trains crossing regions on printed timetables. Standard time made travel, work and news easier to coordinate anywhere. The lesson is simple: new speed often forces society to agree on new rules.
Q0421The first photograph of a person happened by accident because the exposure was so long that only someone standing still was captured.
An 1838 Daguerre photo of a Paris street looks empty, but its long exposure caught one man standing still to have his shoes shined — the first person ever photographed, by accident.
Q0422The first moving pictures lasted only seconds, yet they changed memory by letting real motion be replayed after the moment had gone.
Early films were often tiny scenes: workers leaving a factory, a train arriving, a face moving. Compared with the long videos on your phone, they were almost nothing, but they made motion portable and repeatable. That mattered globally because events could be seen by people who were not there. Film gave memory a moving body.
Q0423The first computer programmers included women, long before programming became a male-dominated industry.
The first programmers were often women — from Ada Lovelace to the ENIAC operators — long before coding was seen as a male field. The story began the other way around.