AoE IV Tech Tree
Civilizations
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Landmarks
Military
Support
Economic
I
Dark Age
House of Wisdom
Barracks
Spearman
Town Center
Scout
Villager
Lumber Camp
Forestry
Mill
Survival Techniques
Wheelbarrow
Mining Camp
Dock
Outpost
II
Feudal Age
—
Hardened Spearman
Phalanx
Archery Range
Archer
Desert Raider
Stable
Desert Raider
Horseman
Blacksmith
Bloomery
Fitted Leatherwork
Iron Undermesh
Steeled Arrow
Textiles
Double Broadax
Horticulture
Professional Scouts
Specialized Pick
Market
Trade Caravan
Baghlah
Dhow
Explosive Dhow
Fishing Boat
Trade Ship
Transport Ship
Extended Lines
Naval Arrowslits
Teak Masts
Arrowslits
Fortify Outpost
III
Castle Age
—
Veteran Spearman
Ghulam
Veteran Archer
Veteran Desert Raider
Crossbowman
Veteran Desert Raider
Veteran Horseman
Camel Lancer
Siege Workshop
Counterweight Trebuchet
Manjaniq
Springald
Greased Axles
Siege Carpentry
Keep
Boiling Oil
Springald Emplacement
Decarbonization
Insulated Helm
Wedge Rivets
Balanced Projectiles
Military Academy
Sultan's Mamluks
Mosque
Herbal Medicine
Lumber Preservation
Fertilization
Shaft Mining
Drift Nets
Armored Hull
Extra Hammocks
Incendiaries
Springald Crews
IV
Imperial Age
Prayer Hall of Uqba
Elite Spearman
Elite Ghulam
Elite Archer
Elite Desert Raider
Elite Crossbowman
Handcannoneer
Elite Desert Raider
Elite Horseman
Elite Camel Lancer
Spyglass
Culverin
Adjustable Crossbars
Geometry
Lightweight Beams
Roller Shutter Triggers
Cannon Emplacement
Damascus Steel
Master Smiths
Angled Surfaces
Platecutter Point
Infantry Support
Piety
Tithe Barns
Madrasa
Biology
Chemistry
Court Architects
Elite Army Tactics
Incendiary Arrows
Serpentine Powder
Siege Works
Silk Bowstrings
Crosscut Saw
Precision Cross-Breeding
Cupellation
Xebec
Explosives
Heated Shot
Shipwrights
Swivel Cannon