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Civilization

Steppe / Central Eurasian

The Eurasian steppe corridor generated distinctive mobility-based polities and cultural repertoires that recurrently transformed agrarian cores across Afro-Eurasia.

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The framework read

The author's reading of this civilization.

  • Geographic core: steppe corridor from Pontic–Caspian to Mongolia enabling large-scale mobility.
  • Cultural-linguistic cohesion: shared nomadic institutional repertoires and steppe diplomatic-military systems.
  • Political-economy: tribute, trade control, and confederation/imperial structures integrated with agrarian peripheries.
  • Continuity: recurrent formations (Xiongnu, Türk, Mongol, later successor polities) with recognizable civilizational patterns.

Why it works — and how it breaks

  • Success vector: G (mobility, cavalry, logistics) + S (pragmatic administration, confederation structures) → enables conquest and tribute extraction.
  • Failure modes: S fragmentation (succession disputes, confederation breakdown) + G tech lag (gunpowder shifts advantage) → assimilation into agrarian cores or transformation into successor states (see comparison-turko-persian-synthesis).

By the numbers †

  • GDPpeak ~$1.8 billion in 1300 CE, ~1% of world GDP, very low due to low population density, mobility-based economy, tribute extraction
  • Population2-4 million, very low density 0.5-1.5/km², mobility-based organization
  • Urbanization2-12% urban population, very low urbanization, largest city: Karakorum 50K-80K in 1300 CE, mobility-based organization
  • Fiscal Capacitytax revenue: $0.04B-$0.14B, tax-to-GDP ratio: ~8% includes tribute, military spending: 40-50% of tax revenue, tribute-based fiscal systems, mobility-based organization, different fiscal mode
  • Technology Index38→44, moderate level, mobility-based adaptations - lower agricultural 7/20, higher military 11/20, cavalry excellence, Silk Road integration, innovation rate 2-5 per century
  • Institutional Metrics3-6 officials per 10K, 55% tax efficiency, 50-150 legal provisions, low-moderate, mobility-based, tribute-based systems, lowest globally
  • Demographic Structure39-40% under 15, 25-32 years life expectancy, 5-6 fertility, 36-43 mortality, very high youth proportion highest globally, mobility-based, very high mortality
  • Infrastructure15,000-25,000 km trade route roads, 500-1,000 km canals, 100 fortifications, 60 bridges, 58/100 sophistication index, Silk Road routes, mobility-based organization limits infrastructure, low

† Scholarly estimates.

People over time

Population (millions) †

01234300 BCE030060090012001500Population

† Scholarly estimates, drawn as separately published segments.

Economy

0.50.690.951.311.8300 BCE030060090012001500GDP

† Estimates after Maddison, to 1945, log scale.

Polities as spans

Samarkand 700 BCE–1868 CESamarkandXiongnu Empire 209 BCE–156 CEXiongnu EmpireTürk Khaganate 552 CE–744 CETürk KhaganateKhazaria 650 CE–969 CEKhazariaUyghur Khaganate 744 CE–840 CEUyghur KhaganateSeljuk Empire 1037 CE–1194 CESeljuk EmpireMongol Empire 1206 CE–1368 CEMongol EmpireChagatai Khanate 1226 CE–1347 CEChagatai KhanateGolden Horde 1240 CE–1502 CEGolden HordeIlkhanate 1256 CE–1335 CEIlkhanateTimurid Empire 1370 CE–1507 CETimurid EmpireKazan Khanate 1438 CE–1552 CEKazan KhanateCrimean Khanate 1441 CE–1783 CECrimean KhanateAstrakhan Khanate 1466 CE–1556 CEAstrakhan KhanateUnion of Soviet Socialist Republics (USSR) 1922 CE–1991 CEUnion of Soviet Socialist Re

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People

Also in the chronicle

AI-made chronicle art; not evidence.

Patterns and comparisons

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Conflicts in this civilization

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  1. 134/133 BCE Han-Xiongnu Wars (134/133 BCE) war series Primary text read
  2. 1211 CE-1234 CE Mongol Conquest of the Jin Dynasty (1211-1234 CE) conquest Primary text read
  3. 11 February 1235-19 March 1279 Mongol Conquest of the Song Dynasty (1235-1279 CE) conquest Primary text read
  4. January-February 1258 (13 days of siege) Siege of Baghdad (1258 CE) siege Stub only
  5. 3 September 1260 Battle of Ain Jalut (1260 CE) battle Primary text read

Art: Patterns of Civilization chronicle art, made with AI: illustrations, not historical evidence. Entries are drafts preserved from civilization.study. Method and sources.