AoE IV Tech Tree
Civilizations
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Landmarks
Military
Support
Economic
I
Dark Age
Dome of the Faith
Tower of Victory
Barracks
Spearman
Mosque
Efficient Production
Town Center
Scout
Villager
Lumber Camp
Forestry
Mill
Survival Techniques
Wheelbarrow
Mining Camp
Dock
Outpost
II
Feudal Age
Compound of the Defender
House of Learning
Hardened Spearman
Archery Range
Archer
Stable
Ghazi Raider
Blacksmith
Bloomery
Fitted Leatherwork
Iron Undermesh
Siege Engineering
Steeled Arrow
Scholar
All-Seeing Eye
Sanctity
Textiles
Double Broadax
Horticulture
Professional Scouts
Specialized Pick
Market
Trader
Baghlah
Dhow
Explosive Dhow
Fishing Boat
Trade Ship
Transport Ship
Extended Lines
Naval Arrowslits
Arrowslits
Fortify Outpost
III
Castle Age
Hisar Academy
Palace of the Sultan
Veteran Spearman
Man-at-Arms
Veteran Archer
Crossbowman
Tower Elephant
Veteran Ghazi Raider
Lancer
War Elephant
Siege Workshop
Counterweight Trebuchet
Mangonel
Springald
Greased Axles
Keep
Boiling Oil
Springald Emplacement
Village Fortresses
Decarbonization
Insulated Helm
Wedge Rivets
Balanced Projectiles
Forced March
Military Academy
Herbal Medicine
Swiftness
Lumber Preservation
Fertilization
Shaft Mining
Drift Nets
Armored Hull
Extra Hammocks
Incendiaries
Salvaged Materials
Springald Crews
IV
Imperial Age
Great Palace of Agra
Elite Spearman
Elite Man-at-Arms
Elite Archer
Elite Crossbowman
Handcannoneer
Howdahs
Elite Ghazi Raider
Elite Lancer
Armored Beasts
Spyglass
Bombard
Adjustable Crossbars
Geometry
Lightweight Beams
Roller Shutter Triggers
Cannon Emplacement
Slow-Burning Defenses
Damascus Steel
Master Smiths
Angled Surfaces
Platecutter Point
Piety
Tithe Barns
Zeal
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