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+# Population Tiers
+
+Anno 117 features a tiered population system where citizens can upgrade to higher tiers as their needs are met. Each tier provides different workforce capabilities and has unique needs.
+
+## Overview
+
+| Tier | Latium Name | Albion Name | Workforce Fraction | Notes |
+|------|-------------|-------------|-------------------|-------|
+| I | Liberti | Waders | 50% | Base workers for farms, fisheries, sawmills |
+| II | Plebeians | Mercators/Smiths | 30% | Intermediate production |
+| III | Equites | Higher Albion tiers | 20% | Complex production chains |
+| IV | Patricians | - | 0% | No workforce, high consumption |
+
+## Tiers
+
+- [Tier I - Liberti / Waders](./tier-i.md)
+- [Tier II - Plebeians / Smiths](./tier-ii.md)
+- [Tier III - Equites](./tier-iii.md)
+- [Tier IV - Patricians](./tier-iv.md)
+
+## Key Mechanics
+
+- **Workforce Balance:** Avoid upgrading all Tier I housing at once; you can lose workers needed for basic chains.
+- **Needs Categories:** Each tier has Food, Public Service, and Fashion needs that must be met for upgrades.
+- **Cascading Effects:** Higher tier shortages cascade across production chains.