AoE IV Tech Tree
Civilizations
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Landmarks
Military
Support
Economic
I
Dark Age
Kremlin
The Golden Gate
Barracks
Spearman
Town Center
Scout
Villager
Lumber Camp
Forestry
Mining Camp
Dock
Hunting Cabin
Scout
Survival Techniques
Wheelbarrow
Wooden Fortress
II
Feudal Age
Abbey of the Trinity
High Trade House
Hardened Spearman
Archery Range
Archer
Stable
Early Knight
Horseman
Blacksmith
Bloomery
Fitted Leatherwork
Iron Undermesh
Siege Engineering
Steeled Arrow
Textiles
Double Broadax
Specialized Pick
Market
Trader
Lodya Attack Ship
Lodya Demolition Ship
Lodya Fishing Boat
Lodya Galley
Lodya Trade Ship
Lodya Transport Ship
Extended Lines
Naval Arrowslits
Horticulture
Professional Scouts
Arrowslits
Castle Turret
Castle Watch
III
Castle Age
High Armory
Spasskaya Tower
Veteran Spearman
Man-at-Arms
Veteran Archer
Crossbowman
Horse Archer
Knight
Veteran Horseman
Siege Workshop
Counterweight Trebuchet
Mangonel
Springald
Greased Axles
Keep
Boiling Oil
Springald Emplacement
Decarbonization
Insulated Helm
Wedge Rivets
Balanced Projectiles
Boyar's Fortitude
Military Academy
Monastery
Warrior Monk
Herbal Medicine
Lumber Preservation
Shaft Mining
Drift Nets
Adaptable Hulls
Armored Hull
Extra Hammocks
Incendiaries
Springald Crews
Fertilization
IV
Imperial Age
Cathedral of the Tsar
Elite Spearman
Elite Man-at-Arms
Elite Archer
Elite Crossbowman
Elite Horse Archer
Streltsy
Mounted Training
Elite Knight
Elite Horseman
Knight Poleaxes
Spyglass
Bombard
Adjustable Crossbars
Geometry
Lightweight Beams
Roller Shutter Triggers
Cannon Emplacement
Damascus Steel
Master Smiths
Angled Surfaces
Platecutter Point
University
Biology
Chemistry
Court Architects
Elite Army Tactics
Incendiary Arrows
Serpentine Powder
Siege Works
Silk Bowstrings
Piety
Tithe Barns
Crosscut Saw
Cupellation
Explosives
Heated Shot
Mounted Guns
Shipwrights
Swivel Cannon
Precision Cross-Breeding