World map in 800 AD

Border history

The interactive map lets you inspect named territories in 800 AD and compare them to earlier or later snapshots on the timeline.

Biographical context

Meet figures alive in, or close to, 800 AD and move from political geography to the people connected to the period.

Era-based reading

The related chronicles below provide long-form reading tied closely to the medieval period.

629 AD – 1180

Byzantine–Arab Wars

Byzantine Empire vs Umayyad Caliphate, Abbasid Caliphate

Centuries of warfare between Byzantium and successive Arab caliphates. The Arabs besieged Constantinople twice (674–678, 717–718) but failed both times, with Greek fire proving decisive. The frontier stabilized along the Taurus Mountains for centuries.

Key battles and events: Battle of Yarmouk (636); First Arab Siege of Constantinople (674–678)

800 AD – 1000

Chichén Itzá Rise and Terminal Classic Collapse

Chichén Itzá vs Cobá vs Yaxuná vs Uxmal and the Puuc cities

During the Terminal Classic, Chichén Itzá rose to dominance in the northern Yucatán, defeating rivals such as Cobá and absorbing Puuc polities while the southern Maya lowland cities collapsed.

Key battles and events: Abandonment of Uxmal and the Puuc sites (c. 950 CE); Chichén Itzá conflict with Yaxuná (c. 900 CE)

800 AD – 1500

Mississippian Chiefdom Wars

Cahokia vs Moundville vs Etowah vs Spiro vs other Mississippian chiefdoms

Widespread warfare among the mound-building Mississippian chiefdoms of the eastern woodlands, centred on the metropolis of Cahokia — North America's largest pre-Columbian settlement.

Key battles and events: Cahokia's rise to dominance (c. 1050); Palisade construction at Cahokia (1170)

793 AD – 1066

Viking Invasions

Norse Vikings vs Anglo-Saxons vs Franks vs various kingdoms

Nearly three centuries of Norse raids, conquests, and settlements that reshaped northern Europe — from the sack of Lindisfarne to the Norman conquest of England.

Key battles and events: Lindisfarne (793); Siege of Paris (885–886)

772 AD – 804 AD

Charlemagne's Saxon Wars

Frankish Empire (Charlemagne) vs Saxons (Widukind)

Charlemagne waged 30 years of brutal campaigns to conquer and forcibly Christianise the pagan Saxons of northern Germany. The Massacre of Verden (782), where thousands of Saxon prisoners were reportedly executed, remains one of the era's most controversial events.

Key battles and events: Destruction of the Irminsul (772); Massacre of Verden (782)

750 AD – 1076

Ghana Empire Wars

Ghana Empire (Wagadou) vs Almoravid Berbers

The Ghana Empire dominated West African gold and salt trade for centuries before falling to the Almoravid jihad, reshaping the political landscape of the Sahel.

Key battles and events: Almoravid siege of Koumbi Saleh (1076); Control of Audaghost trade hub (990)

744 AD – 840 AD

Uyghur Khaganate Wars

Uyghur Khaganate vs Göktürks, Tang China (as ally/rival), Yenisei Kirghiz

The Uyghurs destroyed the Göktürk Khaganate and became the dominant steppe power, crucially aiding Tang China in suppressing the An Lushan Rebellion before being destroyed by the Kirghiz.

Key battles and events: Destruction of Göktürks (744); Recapture of Chang'an for Tang (757)

711 AD – 1492

Reconquista

Christian kingdoms of Iberia vs Moorish states

Nearly 800 years of Christian reconquest of the Iberian Peninsula from Moorish rule — from the Battle of Covadonga to the fall of Granada in 1492.

Key battles and events: Covadonga (722); Las Navas de Tolosa (1212)

Baghdad

Al-Khwarizmi

c. 780 CE – c. 850 CE

Father of algebra, originator of the word 'algorithm', pioneer of Hindu-Arabic numerals in the Islamic world

Frankish Empire

Charlemagne

c. 742 AD – 814 AD

Emperor of the Romans, King of the Franks, father of Europe, Carolingian Renaissance

India (Kerala to the Himalayas)

Shankara

c. 788 CE – c. 820 CE

Founder of Advaita Vedanta, philosopher of non-dualism, unifier of Hindu thought across India

Rayy / Baghdad / Persia

Al-Razi

c. 854 – 925

First clinical distinction of smallpox from measles, empirical medicine, alchemy, critique of Galen's humoral theory

Egypt & Babylonia

Saadia Gaon

882 CE – 942 CE

First systematic Jewish philosopher, translator of the Torah into Arabic, Gaon of Sura

Built 800 AD · Asia

Borobudur

Largest Buddhist temple in the world, on Java

Built 800 AD · South America

Ciudad Perdida

Lost City in Colombia's Sierra Nevada jungle, a Tairona settlement of stone terraces founded 650 years before Machu Picchu

Built 800 AD · Asia

Kedarnath Temple

Ancient Shiva temple at 3,583 meters in the Himalayas, one of the highest-altitude major temples and part of the Char Dham pilgrimage circuit

Built 800 AD · North America

Spiro Mounds

Mississippian ceremonial mound complex in Oklahoma that yielded one of the richest caches of pre-Columbian religious art north of Mexico.

Built 800 AD · Europe

Venice

Maritime republic dominating Mediterranean trade for centuries

Built 784 AD · Europe

Mosque-Cathedral of Córdoba

Masterpiece of Moorish architecture with a cathedral built inside

Baghdad · Thinker

Al-Khwarizmi

The Man Who Invented Algebra

The Baghdad scholar who gave the world algebra and the word algorithm — how a ninth-century polymath at the House of Wisdom synthesised Greek, Indian, and Persian mathematics into a system that would power every equation ever written.

Frankish Empire · Conqueror

Charlemagne

The King Who United Europe

The Frankish king who conquered half of Europe, was crowned Emperor of the Romans on Christmas Day 800, and launched a cultural renaissance that preserved learning through the Dark Ages — the man historians call the Father of Europe.

India (Kerala to the Himalayas) · Philosopher

Shankara

The Man Who Reclaimed the Infinite

In thirty-two years, Adi Shankaracharya walked the length of India barefoot, defeated every rival philosophical school in open debate, founded four monasteries that still stand today, and delivered one message that reshaped a civilization: you are Brahman. You always were.

Rayy / Baghdad / Persia · Scientist

Al-Razi

The Physician Who Doubted Galen

The Persian physician who first distinguished smallpox from measles, distilled alcohol for medicine, wrote the largest medical encyclopedia of the ancient world, and dared to challenge the greatest medical authority in history — in his own words.