|
| |
HORSEBACK RIDING |
 |
Cavalry Unit |
|
|
|
| |
CHIVALRY
(Feudalism) |
|
Knight Unit |
|
|
|
|
| |
NAVIGATION
(Map Making) |
|
Sail Unit |
 |
Magellan's Expedition |
|
|
|
| |
MAGNETISM
(Navigation) |
|
Frigate Unit |
|
|
|
|
|
| |
ELECTRONICS
(Engineering) |
 |
Hydro Plant |
|
Hoover Dam |
|
|
|
| |
COMPUTERS
(Mathematics) |
|
SETI Program |
|
|
| |
CEREMONIAL BURIAL |
|
Temple |
|
|
|
| |
MYSTICISM |
|
Oracle |
|
|
|
| |
ASTRONOMY
(Mathematics) |
|
Copernicus' Observatory |
|
|
|
| |
STEAM ENGINE
(Invention) |
|
Ironclad Unit |
|
|
 |
| |
FLIGHT
(Combustion) |
|
Fighter Unit |
|
|
|
| |
ADVANCED FLIGHT
(Electricity) |
|
Bomber Unit |
|
Carrier Unit |
|
|
|
| |
ROCKETRY
(Electronics) |
|
Nuclear Unit |
|
|
|
| |
SPACE FLIGHT
(Computers) |
 |
SS Structural |
|
Apollo Program |
|
|
|
| |
PLASTICS
(Refining) |
|
SS Component |
|
|
|
| |
ROBOTICS
(Computers) |
|
Artillery Unit |
|
Mfg. Plantt |
|
SS Module |
|
|
| |
POTTERY |
|
Granary |
|
Hanging Gardens |
|
|
|
| |
CODE OF LAWS |
|
Courthouse |
|
|
|
| |
MONARCHY
(Ceremonial Burial) |
|
|
|
|
|
| |
RELIGION
(Writing) |
|
Cathedral |
|
J.S. Bach's Cathedral |
|
Michelangelo's Chapel |
|
|
|
| |
SUPERCONDUCTOR
(Mass Production) |
|
SDI Defense |
|
|
|
| |
MAP MAKING |
|
Trireme Unit |
|
Lighthouse |
|
|
|
|
| |
BANKING
(Trade) |
|
Bank |
|
|
| |
THE WHEEL |
|
Chariot Unit |
|
|
| |
WRITING |
|
Diplomat Unit |
|
Library |
|
|
 |
| |
LITERACY
(Code of Laws) |
|
Great Library |
|
|
|
|
|
|
|
|
|
| |
LABOR UNION
(Mass Production) |
|
Mech. Inf. Unit |
|
|
| |
MASONRY |
|
Palace |
|
City Walls |
|
Pyramids |
|
Great Wall |
|
|
|
| |
CONSTRUCTION
(Currency) |
|
Aqueduct |
|
Colosseum |
|
Fortress |
|
|
|
| |
MATHEMATICS
(Alphabet) |
|
Catapult Unit |
|
|
|
| |
UNIVERSITY
(Philosophy) |
|
University |
|
|
|
| |
THEORY OF GRAVITY
(Astronomy) |
|
Isaac Newton's College |
|
|
| |
INDUSTRIALIZATION
(Banking) |
|
Transport Unit |
|
Factory |
|
Women's Suffrage |
|
|
|
| |
COMMUNISM
(Philosophy) |
|
United Nations |
|
|
| |
GENETIC ENGINEERING
(Medicine) |
|
Cure for Cancer |
|
|
|
| |
BRIDGE BUILDING
(Iron Working) |
|
|
|
| |
RAILROAD
(Steam Engine) |
|
Darwin's Voyage |
|
|
|
|
|
| |
THE CORPORATION
(Banking) |
|
|
| |
REFINING
(Chemistry) |
|
Power Plant |
|
|
|
| |
COMBUSTION
(Explosives) |
|
Cruiser Unit |
|
|
|
| |
IRON WORKING |
|
Legion Unit |
|
|
|
|
|
|
| |
GUN POWDER
(Iron Working) |
|
Musketeers Unit |
|
|
|
| |
METALLURGY
(University) |
|
Cannon Unit |
|
|
|
| |
STEEL
(Industrialization) |
|
Battleship Unit |
|
|
|
| |
AUTOMOBILE
(Combustion) |
|
Armor Unit |
|
|
|
| |
MASS PRODUCTION
(The Corporation) |
|
Submarine Unit |
|
Mass Transit |
|
|
|
| |
NUCLEAR FISSION
(Atomic Theory) |
|
Manhattan Project |
|
|
|
| |
NUCLEAR POWER
(Electronics) |
|
Nuclear Plant |
|
|
|
| |
FUSION POWER
(Superconductor) |
|
|
| |
BRONZE WORKING |
|
Phalanx Unit |
|
Colossus |
|
|
| |
CURRENCY |
|
Marketplace |
|
|
|
| |
TRADE
(Code of Laws) |
|
Caravan Unit |
|
|
|
| |
MEDICINE
(Philosophy) |
|
Shakepeare's Theatre |
|
|
|
|
|
|
|
| |
CONSCRIPTION
(The Republic) |
|
Riflemen Unit |
|
|
|
| |
RECYCLING
(Democracy) |
|
Recycling Center |
|
|
