Industrial Ages: changes in causality

[Ribannah]

Nationalism
Civ2: - | -
Civ3: last era | Communism, Espionage
Ribannah says: (Humanism; Leadership ->) Enlightenment, Printing Press | Democracy, Espionage, Romanticism

Steam Power
Civ2 (Steam Engine): Invention, Physics | Railroad
Civ3: last era | Electricity, Industrialization
Ribannah says (Steam Engine): (Alchemy; The Mill ->) Coal Mining, Empiricism | Railroad

Medicine
Civ2: Philosophy, Trade | Chemistry, Genetic Engineering, Sanitation
Civ3: last era | Sanitation, Scientific Method
Ribannah says: Philosophy | Alchemy, Chemistry, Sanitation

Industrialization
Civ2: Banking, Railroad | Communism, The Corporation, Steel
Civ3: last era and Steam Power | The Corporation, Espionage
Ribannah says: Colonialism, Railroad | Communism, Logistics, The Corporation, Steel

Electricity
Civ2: Magnetism, Metallurgy | Electronics, Radio, Refrigeration, Steel
Civ3: last era, Steam Power | Replaceable Parts, Scientific Method
Ribannah says: Magnetism, Metallurgy | Atomic Theory, Electronics, Radio, Steel

Sanitation
Civ2: Engineering, Medicine | Refrigeration
Civ3: Medicine | -
Ribannah says: Canal Building, Medicine | Refrigeration

Communism
Civ2: Industrialization, Philosophy | Espionage, Guerilla Warfara
Civ3: Nationalism | -
Ribannah says: Industrialization, Romanticism | (Socialism ->) Labor Union

Espionage
Civ2: Communism, Democracy | -
Civ3: Industrialization, Nationalism | -
Ribannah says: Electronics, Nationalism | -

The Corporation
Civ2: Economics, Industrialization | Electronics, Genetic Engineering, Mass Production, Refining
Civ3: Industrialization | Refining, Steel
Ribannah says: Economics, Industrialization | Electronics, Mass Production, Pharmacology, Refining

Scientific Method
Civ2: - | -
Civ3: Electricity, Medicine | Atomic Theory
Ribannah says: - | -

Refining
Civ2: Chemistry, The Corporation | Combustion, Plastics
Civ3: The Corporation | Combustion
Ribannah says: Atomic Theory, The Corporation | Fission, Hydraulics, Plastics

Steel
Civ2: Electricity, Industrialization | Automobile, Machine Tools
Civ3: The Corporation | Combustion
Ribannah says: Electricity, Industrialization | Hydraulics

Atomic Theory
Civ2: Physics, Theory of Gravity | Nuclear Fission
Civ3: Scientific Method | Electronics
Ribannah says: Chemistry, Electricity | (Quantum Physics ->) The Laser, Refining

Combustion
Civ2: Explosives, Refining | Automobile, Flight
Civ3: Refining, Steel | Flight, Mass Production
Ribannah says (Hydraulics): Refining, Steel | Automobile, Flight, Refrigeration

Replaceable Parts
Civ2 (Machine Tools): Steel, Tactics | Advanced Flight, Miniaturization
Civ3: Electricity | Mass Production
Ribannah says: - | -

Flight
Civ2: Combustion, Theory of Gravity | Radio
Civ3: Combustion | Advanced Flight
Ribannah says: Hydraulics, Theory of Gravity | Advanced Flight

Amphibious Warfare
Civ2: Navigation, Tactics | -
Civ3: Mass Production | -
Ribannah says: Navigation, Tactics | -

Mass Production
Civ2: Automobile, The Corporation | Computers, Labor Union, The Laser, Nuclear Fission, Recycling
Civ3: Combustion, Replaceable Parts | Amphibious Warfare, Motorized Transportation
Ribannah says: Automobile, The Corporation | The Laser, Plastics, Recycling

Electronics
Civ2: The Corporation, Electricity | Miniaturization, Nuclear Power, Rocketry
Civ3: Atomic Theory | Motorized Transportation, Radio
Ribannah says: The Corporation, Electricity | Computers, Espionage, Rocketry

Advanced Flight
Civ2: Machine Tools, Radio | Combined Arms, Rocketry
Civ3: Flight, Motorized Transportation, Radio | next era
Ribannah says: Flight, Telecommunication | Combined Arms, Rocketry, Stealth, Tourism

Radio
Civ2: Electricity, Flight | Advanced Flight
Civ3: Electronics | Advanced Flight
Ribannah says: Electricity, (Explosives; Industrialization ->) Logistics | Telecommunication