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World at War

Mongol Conquests

1206–1368 Asia / Europe / Middle East Status: ended Casualties: ~40 million (c. 10% of world population)

The largest contiguous land empire in history. Genghis Khan and his descendants conquered from China to Eastern Europe. The destruction of Baghdad (1258) ended the Abbasid Caliphate; depopulation of Central Asia and China was catastrophic.

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Belligerents

  • Mongol Empire (Genghis Khan, successors)
  • China
  • Persia
  • Russia
  • Baghdad Caliphate

Casualties

~40 million (c. 10% of world population)

Key events

  • 1219–1221 — Khwarazmian campaign (Samarkand, Merv razed)
  • 1241 — Liegnitz & Mohi (Europe overrun)
  • 1258 — Sack of Baghdad (caliphate destroyed)

Aftermath

Largest contiguous land empire ever. Sack of Baghdad ended the Abbasid Caliphate and the Islamic Golden Age. Black Death (1347–1351) likely spread along Mongol trade routes from Yunnan to Crimea to Europe. Russia under 'Tatar yoke' for 240 years. Fragmented into khanates that became Mughal India, Ilkhanate Persia, Yuan China, Crimean Tatars.

Weapons & matériel

  • Mongol composite recurve bow (range ~300m)
  • Three-arrow quivers (light, heavy, signal)
  • Lamellar armour
  • Captured Chinese siege engines (counterweight trebuchet)
  • Early gunpowder bombards

Technology

Yam postal-relay system (forerunner of modern messaging); integrated Chinese siegecraft; gunpowder weapons (early bombards); decimal military organization

Economy

Pax Mongolica reopened Silk Road; introduced paper currency (chao) across Eurasia; first guaranteed-safe transcontinental trade

Cost

Estimated 30–40 million dead — perhaps 7–10% of world population at the time

Sources

  • Secret History of the Mongols
  • Rashid al-Din
  • Juvayni
From World at War, an interactive atlas by Jairus Pereira. Figures are approximate, drawn from Wikipedia, UCDP, ACLED and academic sources — a design artefact, not an authoritative register. Contact.