These are the buildings, units and technologies available for the United States in Age of Empires III: Definitive Edition. The age icons 
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signify the ages in which the buildings, units and technologies become available. Clicking on the icon links to the corresponding page.
Economy[]
Town Center[]
 Town Center |
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 Settler |
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 Commerce Age |
→ |  Fortress Age |
→ |  Industrial Age |
→ |  Imperial Age |
 Levy |
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 Ransom |
House[]
 House |
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Market[]
 Market |
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 Hunting Dogs |
→ |  Steel Traps |
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 Gang Saw |
→ |  Log Flume |
→ |  Circular Saw |
 Placer Mines |
→ |  Amalgamation |
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 Frontiersmen |
Livestock Pen[]
 Livestock Pen |
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 Sheep |
 Selective Breeding |
Mill[]
 Mill |
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 Seed Drill |
→ |  Artificial Fertilizer |
Estate[]
 Estate |
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 Bookkeeping |
→ |  Homesteading |
→ |  Refineries |
Meeting House[]
 Meeting House |
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 Surgeon |
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 Spy |
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 Medical Science |
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 Town Watch |
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 Gas Lighting |
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 Bill of Rights |
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 Standing Army | ||||||
 Mass Cavalry | ||||||
 Pennsylvania Pound |
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 1st Pennsylvania Rifles |
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 Pennsylvania Cavalry |
Factory[]
 Factory |
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 Heavy Cannon |
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 Cannery |
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 Water Power |
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 Steam Power |
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 Mass Production |
State Capitol[]
Military[]
Barracks[]
 Barracks |
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 State Militia |
→ |  Veteran State Militia |
→ |  Volunteers |
→ |  Imperial Volunteers | ||
 Regular |
→ | Veteran Regulars |
→ | Guard Regulars |
→ | Imperial Regulars | ||
 Veteran Sharpshooter |
→ | Guard Sharpshooters |
→ | Imperial Sharpshooters |
Stable[]
 Stable |
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 Hussar |
→ |  Veteran Hussars |
→ |  Guard Hussars |
→ |  Imperial Hussars | ||
 Veteran Carbine Cavalry |
→ | Guard Carbine Cavalry |
→ | Imperial Carbine Cavalry |
Artillery Foundry[]
 Artillery Foundry |
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 Gatling Gun |
→ |  Heavy Gatling Guns |
→ | Imperial Gatling Guns | ||||||
 Culverin |
→ | Culverins Royale |
→ | Imperial Culverins Royale | ||||||
 Mortar |
→ | Howitzers |
→ | Imperial Howitzers | ||||||
 Horse Artillery |
→ | Heavy Horse Guns |
→ | Imperial Horse Artillery | ||||||
 Petard |
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 Quaker Gun |
Dock[]
 Dock |
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 Fishing Boat |
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 Sloop |
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 Steamer |
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 Frigate |
→ |  Imperial Men-o'-War | ||||||||
 Ironclad |
→ |  Ship's Howitzers (Heavy Ironclad) |
→ | Imperial Floating Battery | ||||||
 Gill Nets |
→ |  Long Lines |
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 Armor Plating |
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 Carronade |
→ |  Percussion Lock |
Arsenal[]
 Arsenal | ||||
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 Infantry Breastplate | ||||
 Counter Infantry Rifling | ||||
 Socket Bayonet | ||||
 Cavalry Cuirass | ||||
 Ranged Cavalry Caracole | ||||
 Gunner's Quadrant | ||||
 Heated Shot |
Saloon[]
 Saloon |
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 Cowboy |
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 Gunslinger |
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 Owlhoot |
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 Refreshing Beverages |
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 Wild West |
→ |  Peacemakers |
Defensive buildings[]
Wall[]
 Wall |
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 Redoubts |
Outpost[]
 Outpost |
→ |  Frontier Outpost |
→ |  Fortified Outpost | ||
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Levy |
Fort[]
 Fort |
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State Militia |
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Regular |
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Veteran Sharpshooter |
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Hussar |
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Veteran Carbine Cavalry |
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Gatling Gun |
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 Revetment | ||||||
 Star Fort | ||||||
Levy |
Federal States[]
Advance to Commerce Age[]
Advance to Fortress Age[]
Advance to Industrial Age[]
Advance to Imperial Age[]
| 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) |