soldier2975
Chieftain
+1 -3 just like all the others
Agriculture 20
Animal husbandry 20
Archery 20
Bronze working 20
Calendar 20
Masonry 20
Mining 20
Pottery 20
Sailing 20
The wheel 20
Trapping 20
Writing 20
Classical era
Construction 20
Currency 20
Drama and poetry 20
Engineering 20
Horseback riding 20
Iron working 20
Mathematics 20
Optics 20
Philosophy 20
Medieval era
Chivalry 20
Civil service 20
Compass 20
Education 20
Guilds 20
Machinery 20
Metal casting 20
Physics 20
Steel 20
Theology 20
Renaissance era
Acoustics 20
Architecture 20
Astronomy 20
Banking 20
Chemistry 20
Economics 20
Gunpowder 20
Metallurgy 20
Navigation 20
Printing press 20
Industrial era
Archaeology 20
Biology 20
Dynamite 20
Electricity 20
Fertilizer 20
Industrialization 20
Military science 20
Rifling 20
Scientific theory 20
Steam power 20
Modern era
Ballistics 20
Combustion 20
Electronics 20
Flight 20
Plastics 20
Radio 20
Railroad 20
Refrigeration 20
Replaceable parts 20
Atomic era
Atomic theory 20
Combined arms 20
Computers 20
Ecology 20
Nuclear fission 20
Penicillin 20
Radar 20
Rocketry 20
Information era
Advanced ballistics 20
Future tech 20
Globalization 20
Lasers 20
Mobile tactics 20
Nanotechnology 20
Nuclear fusion 20
Particle physics 20
Robotics 20
Satellites 20
Stealth 20
Telecommunications 20
The Internet 20
Agriculture 20
Animal husbandry 20
Archery 20
Bronze working 20
Calendar 20
Masonry 20
Mining 20
Pottery 20
Sailing 20
The wheel 20
Trapping 20
Writing 20
Classical era
Construction 20
Currency 20
Drama and poetry 20
Engineering 20
Horseback riding 20
Iron working 20
Mathematics 20
Optics 20
Philosophy 20
Medieval era
Chivalry 20
Civil service 20
Compass 20
Education 20
Guilds 20
Machinery 20
Metal casting 20
Physics 20
Steel 20
Theology 20
Renaissance era
Acoustics 20
Architecture 20
Astronomy 20
Banking 20
Chemistry 20
Economics 20
Gunpowder 20
Metallurgy 20
Navigation 20
Printing press 20
Industrial era
Archaeology 20
Biology 20
Dynamite 20
Electricity 20
Fertilizer 20
Industrialization 20
Military science 20
Rifling 20
Scientific theory 20
Steam power 20
Modern era
Ballistics 20
Combustion 20
Electronics 20
Flight 20
Plastics 20
Radio 20
Railroad 20
Refrigeration 20
Replaceable parts 20
Atomic era
Atomic theory 20
Combined arms 20
Computers 20
Ecology 20
Nuclear fission 20
Penicillin 20
Radar 20
Rocketry 20
Information era
Advanced ballistics 20
Future tech 20
Globalization 20
Lasers 20
Mobile tactics 20
Nanotechnology 20
Nuclear fusion 20
Particle physics 20
Robotics 20
Satellites 20
Stealth 20
Telecommunications 20
The Internet 20