AoE IV Tech Tree
Civilizations
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Landmarks
Military
Support
Economic
I
Dark Age
—
Barracks
Spearman
Harbor
Town Center
Scout
Villager
Kingdom of France
Knights Hospitaller
Principality of Antioch
Mill
Survival Techniques
Wheelbarrow
Mining Camp
Outpost
II
Feudal Age
Fortress
Hardened Spearman
Hospitaller Knight
Serjeant
Archery Range
Archer
Stable
Chevalier Confrere
Horseman
Demolition Ship
Fishing Boat
Galley
Hulk
Transport Ship
Extended Lines
Naval Springald Emplacement
Blacksmith
Bloomery
Fitted Leatherwork
Iron Undermesh
Siege Engineering
Steeled Arrow
Angevin Empire
Kingdom of Castile
Republic of Genoa
Textiles
Horticulture
Professional Scouts
Specialized Pick
Market
Arrowslits
Fortify Outpost
III
Castle Age
—
Veteran Spearman
Veteran Hospitaller Knight
Veteran Serjeant
Heavy Spearman
Man-at-Arms
Veteran Archer
Crossbowman
Genitour
Genoese Crossbowman
Veteran Chevalier Confrere
Veteran Horseman
Templar Brother
Rule of Templars
Siege Workshop
Counterweight Trebuchet
Mangonel
Springald
Greased Axles
Drift Nets
Armored Hull
Extra Hammocks
Incendiaries
Springald Crews
Decarbonization
Insulated Helm
Wedge Rivets
Balanced Projectiles
Military Academy
Monastery
Monk
Herbal Medicine
Kingdom of Poland
Republic of Venice
Teutonic Order
Fertilization
Shaft Mining
Lettre de Change
IV
Imperial Age
Notre Dame
Elite Spearman
Elite Hospitaller Knight
Elite Serjeant
Elite Heavy Spearman
Elite Man-at-Arms
Condottiero
Teutonic Knight
Elite Archer
Elite Crossbowman
Elite Genitour
Elite Genoese Crossbowman
Elite Chevalier Confrere
Elite Horseman
Elite Templar Brother
Szlachta Cavalry
Spyglass
Adjustable Crossbars
Geometry
Lightweight Beams
Roller Shutter Triggers
Venetian Galley
Explosives
Heated Shot
Shipwrights
Damascus Steel
Master Smiths
Angled Surfaces
Platecutter Point
University
Biology
Brigandine
Counterweight Defenses
Court Architects
Cranequins
Elite Army Tactics
Incendiary Arrows
Siege Works
Silk Bowstrings
Fanaticism
Piety
Tithe Barns
Precision Cross-Breeding
Cupellation
Venetian Trader