Acoustics
Prerequisite Techs: Education
Leads to Techs: Scientific Theory
Unlocks: Opera House, The Sistine Chapel, The Kremlin
Archaeology
Prerequisite Techs: Navigation
Leads to Techs: Biology
Unlocks: Museum, Hermitage, The Louvre
Astronomy
Prerequisite Techs: Education, Compass
Leads to Techs: Navigation
Unlocks: Caravel, Observatory, faster Embarked movement, Embarking across Oceans
Banking
Prerequisite Techs: Education, Chivalry
Leads to Techs: Economics
Unlocks: Satrap's Court, Bank, The Forbidden Palace
Chemistry
Prerequisite Techs: Gunpowder
Leads to Techs: Military Science, Fertilizer
Unlocks: Cannon, Ironworks
Economics
Prerequisite Techs: Banking, Printing Press
Leads to Techs: Military Science
Unlocks: Windmill, Big Ben
Fertilizer
Prerequisite Techs: Chemistry
Leads to Techs: Dynamite
Unlocks: Farm Food yields increased by 1 on tiles with no access to fresh water.
Gunpowder
Prerequisite Techs: Physics, Steel
Leads to Techs: Chemistry, Metallurgy
Unlocks: Musketman, Minuteman, Musketeer, Janissary
Metallurgy
Prerequisite Techs: Gunpowder
Leads to Techs: Rifling
Unlocks: Lancer, Sipahi
Military Science
Prerequisite Techs: Economics, Chemistry
Leads to Techs: Steam Power
Unlocks: Cavalry, Russian Cossack, Military Academy, Brandenburg Gate
Navigation
Prerequisite Techs: Astronomy
Leads to Techs: Archaeology, Scientific Theory
Unlocks: Frigate, Ship of the Line, Seaport
Printing Press
Prerequisite Techs: Machinery, Physics
Leads to Techs: Economics
Unlocks: Theatre, Taj Mahal
Rifling
Prerequisite Techs: Metallurgy
Leads to Techs: Dynamite
Unlocks: Rifleman
Scientific Theory
Prerequisite Techs: Navigation, Acoustics
Leads to Techs: Biology, Steam Power
Unlocks: Public School, Coal
