Construction
+Applied Math
Architecture
Work Camp(P)
Capital (H)
Watch Tower(D)
Labourer

Construction
Masonry
City Wall(D)
Temple of Zeus(H)
Fortification(D)
Infrastructure(P)

Construction
+ Aqueducts
Concrete
Arena(H)

Construction
+ Geometry
Civic Engineering
Conscripted Labour(P)
Coliseum

Engineering
+Tribes
Copper Smelting
Forge(P)
Slavemaster
Hvy Swordsman

Engineering
+ Trade
Bronze Working
Hoplite

Engineering
+Alchemy
Iron Working
Legion
Mine Shaft(P)
Aux Legion

Sea
+Astronomy
Sails
Net(F)
Bireme

Sea
+Seamanship
Map Making
Port(C)
Lighthouse of Alexandria(C)

Sea
+Geometry
Hullmaking
Fisheries(F)
Heptrireme

Sea
+Dark Ages
Ocean Faring
Longship

Flight
+Bronze Working
Archery
Archer

Flight
+Barracks
Composite Bow
Composite Archer

Flight
+Geometry
Siege Weapons
Catapult

Warfare
+Projectile Weapons
Horse Riding
Javelin Cavalry

Warfare
+Wheel
Chariots
Chariot

Warfare
+Proj Weap
Aristocracy
Chariot Archer

Warfare
+Barracks
Horse Armor
Horseman

Warfare
+Aristocracy
Mobile Tactics
Horse Archer

Warfare
+Tribunal Empire
Stirrup
Cataphract

Economics
+Wheel
Trade
Caravan

Economics
+Copper Smelting
Currency
Agora(C)
Trading POST(C)

Government
+City State
Oligarchy
Elephant Warrior
Capitalaztion

Economics
+Jurisprudence
Bureaucracy
Marketplace(C)
Silo(F)
Appian Way(H)

Government
+Ethics
Tribunal Empire
Settler
Hadrians Wall(D)

Society
Religion
Shrine(H)
Entertainer(H)

Society
+Writing
Drama
Theatre(H
Olympics(D)

Society
+Monoethism
Christianity
Monastery(S)
Resurrection(H)
Cleric

Environment
+Masonry
Aqueducts
Aqueduct(F)
Hanging Garden(F)
Latifundia

Medicine
+Granaries
Herbalism
Apothecary(G)
Valley Of the Kings(G)

Construction
+Ind Revolution
Oil Refining
Drill Platform(P)
Submarine

Engineering

Gothic Architecture
Bascilica(H)

Engineering
Perspective
Mosque(S)

Engineering
+Age Of Reason
Modern Metall
Advanced Mine(P)

Engineering
+Economics
Indust Rev
Factory(P)
Ironclad

Engineering
+Chemistry
Explosives
Artillery

Engineering
+Internal Comb
Mass Prod
Sonar Bouy
Destroyer
Machine Guner
PT Boat

Sea
+Dark Ages
Compass
Carrack

Sea
+Greek Fire
Astrolabe
Dromon

Sea
+Canon Making
Chronometer
East India Company(C)
Galleon

Sea
+ Economics
Naval Tactics
Battlements(D)
Ship of Line

Sea
+Explosives
Adv Naval Tactics
Battleship

Flight
+Feudalism
Crossbow
Crossbowman

Flight
+Class Educ
Greek Fire
Trebuchet

Flight
+Trade Guilds
Gunpowder
Arquebusier

Flight
+Machine Tools
Cannon Making
Canon

Warfare
+Feudalism
Chivalry
Feudal Cavalry

Warfare
+Flintlock
Cavalry Tactics
Cavalry

Government
+Nationalism
Facism
Facist

Economics
+Mills
Banking
Silk Road(P)
Pikemen

Economics
+Astrolabe
Trade Guilds Craft Guild(P)
Merchant Trader
Merchant

Economics
+Democracy
Economics
Brokerage(C)
London Ex(C)

Government
+Indust Rev
Communism
Revolutionary

Economics
+Electricity
Mass Media
Television(C)
Outlet Mall(C)
Televangelist

Economics
+Mass Prod
Corporation
Empire State(G)
Corporate Branch

Physical Science
+Theology
Classical Education
University
Abolitionist

Government
+Islam
Caliphate
Janissary

Physical Science
+Astrolabe
Optics
Galileo's Telescope(S)

Physical Science
+Alchemy
Chemistry

Physical Science
+Age Of Reason
Physics
Newton's Theories(S)

Government
+Civ Enginering
Theology
Hagia Sophia(H)

Society
Islam
Mecca(S)

Society
+Perspective
Renaissance

Society
+Chivalry
Vernacular Prose
Shakespeare's Theatre(H)

Society
+Nationalism
Age Of Reason
Emancipation Proclamation(P)

Environment
+Dark Ages
Agricultural Revolution
Advanced Farms

Energy
+Oil Refining
Internal Combustion
Troop Ship

Energy
+Indust Rev
Electricity
Movie Palace
Listening Post

Medicine
+Chem/Ind Rev
Pharmaceuticals
Drugstore(G)
Penicillin(F)

Society
+Black Smith
Feudalism
Castle

Society
+Classical Ed
Printing Press
Pub House(S)
Gutenberg's Bible(H)

Society
+Renaissance
Nationalism

Government
+Monarchya
Monarchy
Magna Carta(S)

Government
+TheocracyA
Theocracy
Teutonic Knight
Knight Templar
Holy Roman Empire(D)

Government
+CaliphateA
Caliphate
Mecca(S)
Janissary
Mameluke

Government
+DyneEmpire
Dynastic Empire
Forbiddem City(G)
Samurai

Government
+TheocMon
Theocratic Monarchy
Cichen Itza(P)
Eagle Archer
Eagle Warrior

Government
+Caliphate
Sultanate
Golden Horn(D)
Saphia

Medicine
+Corporation
Modern Medicine
Hospital

Society
+Mass Media
Criminal Code
Correctional Facility(E)
Zero Crime(E)
Lawyer

Government
+Age Of Reason
Democracy

Engineering
+Nuclear Power
Robotics
Robotic Plant(P)
Auto Fishery(F)

Engineering
+Digital Encrypt
Nano Assembly
Sea Tunnel
Undersea Base
Sea Engineer

Engineering
+Technocracy
Nano Machines
Sea Mines(P)
Nanite Defusser(D)

Engineering
+Plasma Weapon
Nano Warfare
Infector

Flight
+Aerodynamics
Naval Avation
Aircraft Carrier

Sea
+Mod Medicine
Fluid Breathing
cout SubS

Sea
+Nano Assembly
Ultra Press Mach
Advanced Sea Mine(P)
Crawler

Flight
+Mass Prod
Aerodynamics
Airport(C)
Aurbase(D)
Fighter

Flight
+Corporation
Vertical Flight
Cargo Helicopter

Flight
+Modern Metal
Jet Propulsion
Bomber

Flight
+Corp Rep
Supersonic Flight
Interceptor

Flight
+Conservation
Advanced Composites
Stealth Bomber
Stealth Fighter

Flight
+Fuel Cells
Space Flight
Orbital Lab(S)
Space Plane

Warfare
+Internal Comb
Tank
Warfare
Tank

Warfare
+Naval Avation
Advanced Inf Tactics
Marine
Paratrooper

Warfare
+Fusion
Plasma Weapon
Plasma Destroyer
Leviathon

Economics
+Corp Republic
Global Economics
Freight Trans
Hollywood(C)

Economics
+Global Comm
Digital Encryption
Global E-Bank(C)
Data Haven(G)

Government
+Neural Interface
Virtual Democracy
Egalitarian Act(H)

Government
+Nano Assembly
Ectopia
Central Matter Decom(P)
Eco Terrorist

Physical Science
+Nano Machine
Gaia Theory
Eden Project(D)
Eco Ranger

Physical Science
+Computer
Quantum Physics
Manhattan Project(S)

Society
+Mod Medicine
Adv Urban Planning
Mega Mines(P)
Urban Planer

Society
+Adv Comp
Arcologies
Arcologies(G)

Society
+ Robotics
AI Serveillance
Security Monitor(E)
Spy Plane

Environment
+Intern Comb
Mass Transit
Public Transport(G)

Environment
+Global Econom
Conservation
Recyc Plant(H)
Nature Preserve(G)

Energy
+Quant Physics
Fuel Cells
Eco Tansport(H)

Medicine
+Gene Therapy
Cybernetics
War Walker

Engineering
+Nano Warfare
Smart Materials
Mega Sea Mines(P)
Dreadnaught

Energy
+Naval Aviation
Radar
Flak Tower(D)
Radar Station(D)
Mobile Sam

Energy
+Corp Rep
Computer
Comp Centre(S)

Flight
+Radar
Guided Weapons
Cruise Missile

Energy
+Quant Physics
Nuclear Power
Nuclear Plant(P)
Internet
Nuclear Sub
Nuke

Energy
+Adv Comp
Superconducto
Maglevs
Field Dynamics Lab(S)

Energy
+Genetics
Neural Interface
VR Amusement Park(H)
Cyber Ninja

Medicine
+Digital Encrypt
Neural Reprogramming
Behavior Mod Centre((E)

Medicine
+Robotics
Genetics
Hydro Dome(E)
Genome(P)
Moray Striker

Medicine
+Chaos Theory
Gene Therapy
World Peace Centre(H)
Emphatic Diplomat

Medicine
+Digital Encrypt
Human Cloning
Incubation Centre(G)

Medicine
+Gene Therapy
Genetic Tailoring
Kraken

Medicine
+Cybernetics
Life Extension
Body Exchange(G)

Government
+Corporation
Corporate Republic

Warfare
+Supersonic Flt
Global Defence
The Agency(D)

Economics
+Nuclear Power
Global Communications
Globesat(D)
ABM

Government
+Robotics
Technocracy

Physical Science
+Computer
Chaos Theory
Hover Infantry

Energy
+Nano Assembly
Fusion
Fusion Plant(P)
Fusion Tank

Engineering
+Horse Armor
Animal Husbandry
Heavy Cavalry

Warfare
+Dark Ages
Black Smith
Conscripted Labour(P)

Warfare
+Black Smith
Chain Mail
Man At Arms

Warfare
+Bronze Working
Metal Working
Peltast

Warfare
+Metal Work
Citizenship
Phalanx

Warfare
+Drama
Diagonal Brace

Warfare
Iron Casting
Medieval Infantry

Warfare
+Gothic Arch
Joinery
Onager

Construction
+Theology
Loom

Warfare
+Iron Working
Migration
Hun Raider

Warfare
+Loom
Plate Armour
Knight

Physical Science

Pythagoras Theorum
Ballista

Sea

Seamanship
Galley

Warfare
+Agriculture
Tribes
Adv Warrior

Environment
Wood Working
Stockade

Warfare
+Monarchy
Yeomanry
Longbow