Adv. Construction
Adv. Engineering
Adv.Flight
Adv. Government
Adv. Naval Warfare
Adv. Robotics
Adv. Rocketry
Adv. Stealth
Adv. Sub-Warfare
Adv. Tactics
Adv. Troop Training
Agriculture
Air Force
Air Transport Capability
Amphibious Warfare
Animal Domestication
Anti-Tank Warfare
Automobile
Archery
Armoured Ships
ASW Warfare
Atmospheric Flight
Atomic Theory
Banking
Bio-technology
Bronze Working
Burial of the Dead
Canal Building
Censorship
Central Banking
Chemical Warfare
Chivalry
Civil Defense
Cloning
Coastal Defense
Code of Laws
Cold Fusion
Collective
Combined Arms Tactics
Combustion
Commonwealth
Communism
Composites
Computers
Conscription
Construction
Cybernetics
Democracy
Diplomacy
Economics
Electricity
Elephant Taming
Engineering
Espionage
Exploration
Explosives
Facism
Fermentation
Feudalism
Flight
Forge
Free Press
Gunpowder
Gravitional Theory
Guerilla Warfare
Highways
Hovercraft
Immigration
Imperial Rule
Industrialization
Internal Security
Intersystem Travel
Invention
Iron Working
Labor Union
Lasers
Leadership
Literacy
Long-range Flight
Machine Tools
Magnetism
Maps
Marine Corps
Mass Transit
Math
Merchant Marine
Medicine
Metallurgy
Mid-air Refueling
Military Coordination
Minefields
Missiles
Mobile Warfare
Monotheism
Mothballing Technology
Mountain Warfare
Nano-technology
National Reserve System
Naval Warfare
Navigation
Nuclear Fission
Nuclear Power
Ocean Floor Development
Patriotism
Peace-time Army
Petroleum Refining
Physics
Pipelines
Plastics
Plumbing
Polytheism
Pottery
Printing Press
Prison System
Propaganda
Quantum Physics
Radio
Railroad
RADAR
Recycling
Repeating Weapons
Republic
Refrigeration
Riot Suppression
River Warfare
Robotics
Rocketry
Sanitation
Seafaring
Sea Transport
Shielding
Siege Warfare
Socialism
Solar Power
SONAR
Sound Barrier
Space Flight
Stealth
Steam-powered Ships
Stirrup
Strip Mining
Submarine Warfare
Sub-Terran Development
Super Computers
Tactics
Telephone
Telescopes
Television
Temporary Bridges
Theocracy
Theology
Trade
Tunnels
V/TOL
Woodworking
Writing