An encyclopedia of world history

The story of our planet and its people, event by event

Clear, carefully checked articles on the moments that shaped our planet, from the asteroid that ended the age of dinosaurs to the fall of the Berlin Wall.

3280 articles · 6 eras · 7 regions

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  1. 1 Prehistory Before c. 3000 BC 303 articles
  2. 2 Ancient World c. 3000 BC – AD 500 650 articles
  3. 3 Middle Ages c. 500 – 1500 652 articles
  4. 4 Early Modern c. 1500 – 1800 603 articles
  5. 5 Modern Era c. 1800 – 1945 602 articles
  6. 6 Contemporary 1945 – present 470 articles

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  1. PrehistoryBefore c. 3000 BC · all 303 articles →
  2. c. 4.54 bn years ago

    Formation of the Earth: How Our Planet Was Born

    A layered rocky planet with an iron core, a silicate mantle and an early crust emerged, opening the Hadean Eon.

  3. c. 4.5 bn years ago

    Formation of the Moon: The Giant Impact With Theia

    Debris from a collision between the proto-Earth and a planet-sized body gathered in orbit to form the Moon, which has accompanied Earth ever since.

  4. c. 4.0-3.5 bn years ago

    Origin of Life on Earth: How and When Life First Began

    Simple single-celled microbes appeared, the ancestors of all living things; how non-living chemistry became life is still unresolved.

  5. c. 2.4 billion years ago

    Great Oxidation Event: How Oxygen First Filled Earth's Air

    Free oxygen became a lasting part of Earth's atmosphere, transforming the chemistry of rocks, oceans and life.

  6. Ancient Worldc. 3000 BC – AD 500 · all 650 articles →
  7. c. 2600-1900 BC

    Indus Valley Civilisation: Bronze Age Cities of South Asia

    The largest urban culture of the Bronze Age world flourished for some seven centuries, then gradually broke up into smaller regional village cultures after about 1900 BC.

  8. c. 3200 BC

    Uruk: The World's First Great City in Ancient Mesopotamia

    Uruk grew into the largest settlement of its time, where monumental temples, mass administration and writing first appeared together, setting the model for Mesopotamian cities.

  9. c. 3300 BC

    Invention of Cuneiform: How Sumer Created the First Writing

    Bookkeeping signs on clay developed into cuneiform, a script used for about 3,000 years to write more than a dozen languages of the ancient Near East.

  10. c. 3100 BC

    Narmer and the Unification of Egypt (c. 3100 BC)

    Upper and Lower Egypt were ruled as a single kingdom, and Narmer is usually counted as the first king of the First Dynasty.

  11. Middle Agesc. 500 – 1500 · all 652 articles →
  12. 507

    Clovis I and the Battle of Vouillé (507): Rise of the Franks

    Frankish victory; Alaric II was killed, the Visigoths lost most of Gaul, and Clovis became the dominant ruler between the Pyrenees and the Rhine.

  13. 527–548

    Empress Theodora: From Actress to Ruler of the Byzantine Empire

    A former actress became Justinian's crowned empress and political partner, shaping court politics, laws on women and church policy until her death in 548.

  14. 527–565

    Justinian I: The Byzantine Emperor Who Tried to Restore Rome

    Justinian recovered North Africa, Italy and part of Spain, codified Roman law and built Hagia Sophia, but left an exhausted, plague-stricken empire.

  15. c. 529

    Monte Cassino and the Rule of St Benedict (c. 529)

    Benedict's monastery survived repeated destruction, and his Rule became the standard guide for monks and nuns across Western Europe.

  16. Early Modernc. 1500 – 1800 · all 603 articles →
  17. 3 August 1492 – 15 March 1493

    Columbus's First Voyage (1492): Crossing the Atlantic

    Columbus reached the Caribbean and returned to Spain, opening lasting contact between Europe and the Americas.

  18. From 1492

    Columbian Exchange: Crops, Animals and Diseases after 1492

    Plants, animals, microbes and people were redistributed across the globe, transforming diets, economies and populations on every inhabited continent.

  19. 1493–1496

    Columbus's Second Voyage (1493–1496): La Isabela and Colonisation

    Spain founded its first planned town in the Americas at La Isabela, imposed tribute on the Taíno of Hispaniola and began permanent colonisation.

  20. 7 June 1494

    Treaty of Tordesillas (1494): Spain and Portugal Divide the World

    Castile and Portugal agreed a dividing meridian 370 leagues west of the Cape Verde Islands, giving Portugal Africa, the route to Asia and later Brazil, and Castile most of the Americas.

  21. Modern Erac. 1800 – 1945 · all 602 articles →
  22. 1803

    Louisiana Purchase (1803): How the United States Doubled in Size

    France sold its claim to Louisiana to the United States for about 15 million dollars, roughly doubling the area of the young republic.

  23. 1804

    Napoleonic Code (1804): The Civil Law That Reshaped Europe

    France gained a single civil code of 2,281 articles, which became a model for civil law across Europe, Latin America and beyond.

  24. 1804–1806

    Lewis and Clark Expedition (1804-1806): Crossing a Continent

    The Corps of Discovery reached the Pacific and returned, mapping the Missouri and Columbia routes and recording hundreds of plants, animals and Native communities.

  25. 21 October 1805

    Battle of Trafalgar (1805): Nelson's Victory and Death at Sea

    Decisive British victory; the Franco-Spanish fleet lost 22 ships and Britain secured naval supremacy for a century.

  26. Contemporary1945 – present · all 470 articles →
  27. 1945–1946

    ENIAC (1945): The First General-Purpose Electronic Computer

    ENIAC proved that large-scale electronic computation was practical and launched the American computer industry.

  28. 1946

    Iron Curtain Speech (1946): Churchill at Fulton, Missouri

    Churchill's warning of an iron curtain across Europe was widely criticised at first but became the defining image of the Cold War division of the continent.

  29. 1946-1949

    Chinese Civil War 1946-1949: Mao's Communists Defeat Chiang

    Communist victory on the mainland; the People's Republic of China was proclaimed and the Nationalist government withdrew to Taiwan.

  30. 1947

    Partition of India 1947: Mass Migration, Violence and Two Nations

    British India was divided into India and Pakistan; an estimated 10 to 20 million people were displaced and hundreds of thousands to perhaps 2 million were killed.