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Legend
1 · Dairy & market gardening
2 · Forestry (fuel!)
3 · Intensive crops
4 · Extensive + fallow
5 · Ranching
Market town
Tap each ring (forestry at #2 is the exam trick!) · toggle the river to warp the rings
Source: J.H. von Thünen (1826) — Der isolierte Staat · Interactive 3D learning model