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Technology Requires Leads to Enables Obsoletes First to research
Advanced Flight (CivRev2) Advanced Flight Flight
Industrialization
Future Technology
Space Flight
Laser
Bomber
Transport Aircraft
None Free Bomber unit
Alphabet (CivRev2) Alphabet None Code of Laws
Writing
Literacy
Library
Oracle of Delphi
None
Artificial Intelligence (CivRev2) Artificial Intelligence Networking
Modern Medicine
None Drone None Free Drone unit
Atomic Theory (CivRev2) Atomic Theory University (technology)
Invention
Electricity
Laser
Nuclear Power
Manhattan Project None Bonus to science production in all cities
Automobile (CivRev2) Automobile Combustion
Steel
None Artillery
Rubber
Light Armor
Cannon
French Cannon
Free Artillery unit
Banking (CivRev2) Banking Currency
Code of laws
Literacy
Corporation
Industrialization
Bank None Substantial amount of gold
Bronze Working (CivRev2) Bronze Working None Currency
Iron Working
Archer
Barracks
Fish
Colossus of Rhodes
None Free Archer unit
Ceremonial Burial (CivRev2) Ceremonial Burial Pottery Religion
Monarchy
Temple
Incense
Great Pyramid
None
Code of Laws (CivRev2) Code of Laws Writing
Alphabet
Currency
Democracy
Monarchy
Trading Post
Cattle
Republic
None Free Trading Post in one of your cities
Combustion (CivRev2) Combustion Steam Power
Gunpowder
Metallurgy
Automobile
Flight
Oil
Tank
Knights
Cataphract
Free Tank unit
Communism (technology) (CivRev2) Communism Industrialization
University (technology)
Social Insurance Communism (government) Himeji Samurai Castle Factories may be built at a reduced price
Construction (CivRev2) Construction Masonry
Iron Working
Engineering Workshop
Oak
None Free Workshop in one of your cities
Corporation (CivRev2) Corporation Banking
Industrialization
Electronics
Networking
Mass Media
Military-Industrial Complex None Bonus to gold production in all cities
Currency (CivRev2) Currency Bronze Working
Code of Laws
Banking Market
Gold
Caravan
Trade Fair of Troyes
None Free Market in one of your cities and a free Caravan unit
Democracy (CivRev2) Democracy Literacy
Code of Laws
University Pikeman
Democracy (government)
Magna Carta
Archer
Bowman
Free Pikeman unit
Electricity (CivRev2) Electricity Metallurgy
Engineering
Steam Power
Electronics
Atomic Theory
Submarine None Free Submarine unit
Electronics (CivRev2) Electronics Electricity
Corporation
Space Flight
Laser
Networking
None None Bonus to trade production in all cities
Engineering (CivRev2) Engineering Construction
Mathematics
Invention
Steam Power
Metallurgy
Electricity
Aqueduct Great Wall Bonus to production in all cities
Feudalism (CivRev2) Feudalism Horseback Riding
Monarchy
Gunpowder Knight
Game
Legion
Horsemen
Trajan's Column
Free Knight unit
Flight (CivRev2) Flight Combustion
Metallurgy
Invention
Advanced Flight
Information Technology
Fighter East India Company Free Fighter unit
Future Technology (CivRev2) Future Technology Superconductor
Globalization
Advanced Flight
None None None
Globalization (CivRev2) Globalization Mass Media
Networking
Future Technology None Trade Fair of Troyes Wealth of gold
Gunpowder (CivRev2) Gunpowder Invention
Feudalism
Combustion Rifleman
Sulfur
Pikemen
Colosseum
Free Rifleman unit
Horseback Riding (CivRev2) Horseback Riding None Feudalism Horseman
Oxen
None Free Horseman unit
Industrialization (CivRev2) Industrialization Steam Power
Banking
Communism
Mass Production
Corporation
Advanced Flight
Factory None Bonus to gold production in all cities
Information Technology (CivRev2) Information Technology Mass Production
Flight
None Silicon Valley None Science +1 for each city
Invention (CivRev2) Invention Literacy
Engineering
Steam Power
Gunpowder
Atomic Theory
Flight
Leonardo's Workshop Colossus of Rhodes Free Great Person
Iron Working (CivRev2) Iron Working Bronze Working Steam Power
Construction
Metallurgy
Legion
Iron
Warrior Free Legion unit
Irrigation (CivRev2) Irrigation Pottery
Masonry
None Wheat None Population +1 in all cities
Laser (CivRev2) Laser Atomic Theory
Electronics
Advanced Flight
None Laser Defense
Jet Fighter
Stealth Bomber
Bomber
Fighter
B52
Free Jet Fighter unit
Literacy (CivRev2) Literacy Alphabet
Writing
Invention
University
Democracy
Banking
Courthouse
Silk
Shakespeare's Theatre
Stonehenge Bonus to science production in all cities
Masonry (CivRev2) Masonry Pottery Mathematics
Construction
Irrigation
Walls
Marble
Great Wall
None Free Walls in one of your cities
Mass Media (CivRev2) Mass Media Printing Press
Corporation
Urban Infrastructure
Globalization
Hollywood Great Theatre
University of Sankore
Population +1 in all cities
Mass Production (CivRev2) Mass Production Railroad
Industrialization
Urban Infrastructure
Superconductor
Nuclear Power
Modern Medicine
Information Technology
Modern Infantry
Aluminum
Riflemen Free Modern Infantry unit
Mathematics (CivRev2) Mathematics Writing
Masonry
Navigation
University
Engineering
Catapult None Free Catapult unit
Metallurgy (CivRev2) Metallurgy Engineering
Iron Working
University (technology)
Combustion
Steel
Electricity
Flight
Cannon Catapult Free Cannon unit
Modern Medicine (CivRev2) Modern Medicine Mass Production
Religion
Artificial Intelligence Red Cross None Population +1 in all cities
Modern Warfare (CivRev2) Modern Warfare Networking
Nuclear Power
None Special Forces
Aircraft Carrier
Nuclear Power Plant
Infantry Free Special Forces unit
Monarchy (CivRev2) Monarchy Code of Laws
Writing
Ceremonial Burial
Feudalism
Religion
Monarchy (government)
Dye
Himeji Samurai Castle
Great Pyramid Free Great Person
Navigation (CivRev2) Navigation Writing
Mathematics
None Galleon
Harbor
East India Company
Whale
Galley
Lighthouse of Alexandria
Free Galleon unit
Networking (CivRev2) Networking Electronics
Corporation
Modern Warfare
Artificial Intelligence
Globalization
None Internet Universities may be built at a reduced price
Nuclear Power (CivRev2) Nuclear Power Atomic Theory
Mass Production
Space Flight
Modern Warfare
None Uranium Bonus to production in all cities
Pottery (CivRev2) Pottery None Ceremonial Burial
Masonry
Irrigation
Granary
Hanging Gardens of Babylon
Wine
None
Printing Press (CivRev2) Printing Press University (technology)
Religion
Mass Media None None Bonus to culture production
Railroad (CivRev2) Railroad Steam Power Mass Production Iron Mine None Bonus to production in all cities
Religion (CivRev2) Religion Ceremonial Burial
Monarchy
Modern Medicine
Printing Press
Cathedral
Fundamentalism
Oracle of Delphi Bonus to culture production
Social Insurance (CivRev2) Social Insurance Communism
Urban Infrastructure
None Community Facility
Universal Healthcare
None Bonus to population in all cities
Space Flight (CivRev2) Space Flight Advanced Flight
Electronics
Nuclear Power
Superconductor Apollo Program
spaceship parts
None The entire map will be revealed
Steam Power (CivRev2) Steam Power Iron Working
Invention
Engineering
Combustion
Steel
Industrialization
Electricity
Railroad
Cruiser
Coal
Galleon Free Cruiser unit
Steel (CivRev2) Steel Metallurgy
Steam Power
Automobile Battleship None Free Battleship unit
Superconductor (CivRev2) Superconductor Mass Production
Space Flight
Future Technology SDI None Free SDI in one of your cities
University (CivRev2) University Literacy
Mathematics
Democracy
None University (building)
Oxford University
Great Library of Alexandria Bonus to science production in all cities
Urban Infrastructure (CivRev2) Urban Infrastructure Mass Production
Mass Media
Social Insurance Recycling Center
Stadium
None Bonus to production in all cities
Writing (CivRev2) Writing Alphabet Navigation
Code of Laws
Mathematics
Monarchy
Literacy
Spy
Great Library of Alexandria
None Free Spy unit
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