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
Town Center
Scout
Villager
Dock
Outpost
II
Feudal Age
Compound of the Defender
House of Learning
Hardened Spearman
Archery Range
Archer
Stable
Raider Elephant
Scout
Blacksmith
Bloomery
Steeled Arrow
Fitted Leatherwork
Iron Undermesh
Siege Engineering
Worker Elephant
Textiles
Market
Trader
Baghlah
Dhow
Explosive Dhow
Fishing Boat
Trade Ship
Transport Ship
Extended Lines
Naval Arrowslits
Tughlaqabad Fort Overwatch
Arrowslits
Fortify Outpost
Tughlaqabad Fort
Amir Warrior
Worker Elephant
Curse of Auliya
III
Castle Age
Hisar Academy
Palace of the Sultan
Veteran Spearman
Man-at-Arms
Veteran Archer
Crossbowman
Veteran Raider Elephant
Lancer
War Elephant
Siege Workshop
Ballista Elephant
Battering Ram
Counterweight Trebuchet
Mangonel
Greased Axles
Decarbonization
Balanced Projectiles
Insulated Helm
Wedge Rivets
Military Academy
Mosque
Healer Elephant
Imam
Herbal Medicine
Piety
Drift Nets
Armored Hull
Extra Hammocks
Incendiaries
Springald Crews
Springald Emplacement
IV
Imperial Age
Great Palace of Agra
Elite Spearman
Elite Man-at-Arms
Elite Archer
Elite Crossbowman
Handcannoneer
Elite Raider Elephant
Elite Lancer
Armored Beasts
Spyglass
Elite Ballista Elephant
Bombard
Adjustable Crossbars
Geometry
Lightweight Beams
Reinforced Arm Ballista
Damascus Steel
Platecutter Point
Master Smiths
Angled Surfaces
Elite Healer Elephant
Tithe Barns
Upgrade to Elite
Madrasa
Biology
Chemistry
Court Architects
Elite Army Tactics
Incendiary Arrows
Serpentine Powder
Siege Works
Silk Bowstrings
Xebec
Explosives
Heated Shot
Shipwrights
Swivel Cannon
Cannon Emplacement