Ancient Ages
Pottery - 2, Ceremonial Burial - 2, Bronze Working - 3, WarriorCode - 3,
Masonry - 4, Mysticism - 4, The Wheel - 4, Alphabet - 5, Horseback Riding - 5
Iron Working - 6, Philosophy - 6, Mathematics - 8 Writing - 8, Code of Laws -
10, Literature - 10*, Map Making - 12, Polytheism - 12, Currency - 16,
Construction - 20, Monarchy - 24*, Republic - 28*.
Middle Ages
Chivalry - 32*, Feudalism - 32, Engineering - 36, Monotheism - 36, Printing
Press - 368, Music Theory - 40*, Theology - 40, Education - 44 Invention -
44, Gunpowder - 48, Banking - 52, Free Artistry - 52*, Astronomy - 56,
Navigation - 56*, Economics - 56*, Chemistry - 60, Metallurgy - 64,
Military Tradition - 64*, Physics - 64, Democracy - 68*, Magnetism - 68,
Theory of Gravity - 68.
Industrial Ages
Espionage - 90*, Sanitation - 90*, Ironclads - 100*, Medicine - 100,
Scientific Method - 100, The Corporation - 100, Amphibious Warfare - 120*,
Communism - 120*, Industrialization - 120, Nationalism - 120*, Steam Power
- 120, Fascism - 130*, Electricity - 140, Mass Production - 140, Motorized
Transportation - 140, Replaceable Parts - 140, Steel - 140, Combustion - 160,
Refining - 160, Advanced Flight - 180*, Electronics - 180, Flight - 180,
Atomic Theory - 200.
Modern Age
Recycling - 240, Rocketry - 240, Computers - 260, Ecology - 260, Satellites -
260, Fission - 280, Nuclear Power - 280, Synthetic Fibers - 280, Smart
Weapons - 280, TheLasers - 280, Space Flight - 300, Stealth - 300,
Superconductor - 300, Genetics - 320, Minituration - 320, Robotics - 320
IntergratedDefense - 360.
* = Optional Tech