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Geography Optional 300+ Score Pack · Model answer

“Under what situations Von Thunen’s model of agricultural location is still rational.” Justify with examples.

  • UPSC 2026
  • Models, Theories and Laws

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Johann Heinrich von Thunen (Der Isolierte Staat, 1826) held soil, climate and skill constant and let distance from a single market decide land use through locational rent — LR = Y(m - c) - Ytd — yielding six concentric rings from market gardening and dairy to livestock ranching.

You are reading the opening of the model answer. The full answer is part of the Geography Optional 300+ Score Pack.

What the full answer covers

  • Situations in Which the Model Remains Rational
  • Where perishability converts distance into cost
  • Where one market genuinely dominates the region
  • Where transport infrastructure is weak, and at the frontier
  • Where distance is read as economic distance
  • Where the Logic Fails
  • …and 1 more sections, with a conclusion
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