Geography as a Price List
Geography does not determine history. But the stage is not neutral: geography sets the price list, not the outcome. People choose; the landscape decides what those choices cost.
Before railways, overland transport was ruinously expensive. In the Roman world, shipping a cargo across the entire Mediterranean cost roughly the same as carting it 100 km inland.
This cost ratio explains why pre-industrial cities clung to coasts and rivers. Rivers unify basins, while mountains fragment them into isolated political units.
Soil and the Moving Stage
Soil types dictate settlement limits across the longue durée, shaping political ceilings invisibly over generations.
| Soil Type | Consequence |
|---|---|
| Alluvial | Renewed annually, supports dense populations |
| Loess | Deep, fertile, easily worked |
| Volcanic | High fertility despite risks |
| Leached tropical | Nutrients wash out fast |
| Karst limestone | Water drains underground |
Geomorphology proves the stage moves. Rivers silt up, turning ports like Ephesus inland. Never read modern terrain back onto the past.