Town Center[]
Units
Upgrades
Manor House[]
No units or upgrades are available.
Market[]
Upgrades
- Hunting Dogs → Steel Traps
- Gang Saw → Log Flume → Circular Saw
- Placer Mines → Amalgamation
- Blunderbuss
- Great Coat
Mill[]
Upgrades
Livestock Pen[]
Upgrades
Dock[]
Units
Upgrades
- Gill Nets → Long Lines
- Armor Plating
- Carronade → Percussion Lock
- Ship's Howitzers
- Imperial Man-of-War and Monitor
Outpost[]
Upgrades
- Frontier Outpost → Fortified Outpost
Wall[]
Upgrades
Church[]
Units
Upgrades
- Bastion
Mission Fervor
Town Watch
Gas Lighting
Mercantilism
Standing Army
Mass Cavalry - American Patriots
Grand Encampment
Barracks[]
Units
Upgrades
Stable[]
Units
Upgrades
Artillery Foundry[]
Units
Upgrades
Arsenal[]
Upgrades
- Counter Infantry Rifling
Infantry Breastplate (No Socket Bayonet) - Cavalry Cuirass
Ranged Cavalry Caracole - Gunner's Quadrant
Heated Shot
Estate[]
Upgrades
Capitol[]
Upgrades
- Blockade
- Spies
- Knighthood → Peerage
- Immigrants
- Large Scale Agriculture
- Deforestation
- Excessive Taxation
- Legendary Native Warriors
| Technology trees in Age of Empires III | |
|---|---|
| Civilizations | |
 Aztecs ·  British ·  Chinese ·  Dutch ·  Ethiopians ·  French ·  Germans ·  Haudenosaunee ·  Hausa ·  Inca ·  Indians ·  Italians ·  Japanese ·  Lakota ·  Maltese ·  Mexicans ·  Ottomans ·  Portuguese ·  Russians ·  Spanish ·  Swedes ·  United States | |
| Campaign and Historical Battle civilizations | |
 John Black's Mercenaries (Act II: Ice) ·  Knights of St. John (Act I: Blood) · United States (campaign) (Act III: Steel) ·   Black Family Estate |