United States technology tree
The United States technology tree index links recorded Age of Empires III units, buildings and research to their individual reference pages. It emphasizes entries whose game data directly identifies this faction and is not a complete reconstruction of every shared option in the in-game tree; check unit and technology pages for additional civilization access.
Linked game entries
- Unit pages
- 48
- Building pages
- 24
- Technology pages
- 70
Civilization roster and research
The lists are grouped into units, buildings and technologies, then organized by the Age recorded in the game data. Shared options can appear in more than one civilization index; inclusion does not mean an item is unique. Follow an entry to check its cost, production or research site, prerequisites, counters and version band. A Home City Card, map alliance or scenario rule may change access, so this list is not a fixed build order.
Scope and availability
Scope: Age of Empires III civilization content. This index reflects matching entries in the saved game-fact records; each linked page gives its own version, Age and access conditions.
How to read the tree
Use the tree when planning an Age-up, Home City deck or response to an opponent. Find the unit line or upgrade that answers the immediate matchup, then check its entry for exact values and access rules. Map, mode, shipments, patch and edition determine which recorded options are useful in a particular match.
Units by Age
Commerce Age: Arsenal Wagon · Bank Wagon · Cowboy · Gunslinger · Hot Air Balloon · Hussar · Owlhoot · Regular · Sloop · Spy · State Militia · Surgeon. Fortress Age: Carbine Cavalry · Culverin · Petard · Sharpshooter · Steamer. Industrial Age: Horse Artillery · Quaker Gun · Rocket. Age not specified: Amelia Black · Coal Prospector Wagon · Crazy Horse · Custer · General · Gold Prospector Wagon · Holme · Homestead Wagon · Infrastructure Wagon; Empire Wars Wagon · Major Cooper · Military Wagon · Minuteman · Outpost Wagon · State Capitol Wagon · Trading Post Rickshaw · Trading Post Wagon. Exploration Age: Blockhouse Wagon · Fishing Boat · Mill Wagon · Native Embassy Travois · Settler · Settler Wagon · Sheep. Exploration Age; Fortress Age (State Capitol): Estate Wagon. Fortress Age*: Frigate. Fortress Age (United States) ; Revolution (revolutionary): Gatling Gun. Industrial Age (Federal Americans) ; Revolution (Europeans): Ironclad. Industrial Age; Fortress Age (Knights of St. John and Europeans with the Advanced Artillery Home City Card): Mortar
Buildings by Age
Commerce Age: American Citadel · Barracks · Meeting House · Saloon · Stable. Fortress Age: Fort. Age not specified: Arsenal. Commerce Age (British, Dutch, Ottomans, Russians, and Swedes); Fortress Age: Artillery Foundry. Exploration Age: Bank · Blockhouse · Command Center · Dock · Fish Trap · House · Livestock Pen · Mill · Native Embassy · Outpost · Town Center. Fortress Age; Exploration Age (with the "Advanced Estate" card): Estate. Fortress Age (United States) ; Industrial Age: Factory. Exploration Age; Industrial Age (Lakota): Gate · Wall. Fortress Age; Revolution*: State Capitol
Technologies by Age
Commerce Age: 1st Pennsylvania Rifles · Amalgamation · Armor Plating · Bill of Rights · Carronade · Cavalry Cuirass · Counter Infantry Rifling · Flint Lock · Gas Lighting · Grand Encampment · Gunner's Quadrant · Heated Shot · Infantry Breastplate · Log Flume · Long Lines · Medical Science · Military Drummers · Paper Cartridge · Patrol · Pennsylvania Cavalry · Pennsylvania Pound · Pillage · Professional Gunners · Ranged Cavalry Caracole · Seed Drill · Socket Bayonet · State Constitutions · Statehood · Steel Traps · Town Watch · Trunion. Fortress Age: American Patriots · Artificial Fertilizer · Bookkeeping · Circular Saw · Percussion Lock · Redoubts. Industrial Age: Cadets · Cannery · Homesteading · Mass Production · New Mexico Immigration · Refineries · Revetment · Ship's Howitzers · Star Fort · Steam Power · Water Power. Imperial Age: Blockade · Brigadier General · Iowa Farmlands · Legendary Native Warriors; Exalted Natives · Pine Tree State · Spies. Exploration Age (Europeans) ; Industrial Age (United States): Conscription. Exploration Age: Frontiersmen · Gang Saw · Gill Nets · Hunting Dogs · Levy · Placer Mines · Selective Breeding. Commerce Age*: Incendiary Grenades. Commerce Age (Africans) Industrial Age: Mass Cavalry · Standing Army. Imperial Age (United States) ; Revolution (Mexicans): Mountain State Gold Rush. Commerce Age (United States) ; Revolution (Mexicans): Oregon Trail. Industrial Age; Revolution (Mexico): Peacemakers. Commerce Age; Revolution (Mexico): Refreshing Beverages. Fortress Age*; Revolution (Mexico): Wild West
Check the entry for version and prerequisites
An index can include options recorded across multiple Age of Empires III releases. Older faction names, card unlocks, research prerequisites and campaign-only rules can change availability. Check the linked page’s version band and conditions before applying an option to a specific game.