Freeciv 3.1.4 tech help (Civ1 ruleset)

Advanced Flight


Alphabet


Astronomy

* Allows Copernicus' Observatory.

Atomic Theory


Automobile

Increases the population's contribution to pollution.

Banking

* Allows Bank (with Marketplace).

Bridge Building

Allows roads to be built on river tiles.

Bronze Working

* Allows Colossus.

Ceremonial Burial

* Allows Temple.

Chemistry


Chivalry


Code of Laws

* Allows Courthouse.

Combustion

* Allows Barracks III.

Communism

* Allows Communism.
* Allows United Nations.

Computers

* Allows SETI Program.

Conscription


Construction

* Allows Aqueduct.
* Allows Colosseum.
* Allows Fortress (with Land terrain and "Settlers" units).

Allows Settlers to build fortresses.

Currency

* Allows Marketplace.

Democracy

* Allows Democracy.

Electricity


Electronics

* Allows Hydro Plant (with River and Factory).
* Allows Hoover Dam.

Engineering


Explosives


Feudalism


Flight

Decreases one-time revenue from new trade routes.

Fusion Power


Genetic Engineering

* Allows Cure For Cancer.

Gunpowder

* Allows Barracks II.

Horseback Riding


Industrialization

* Allows Factory.
* Allows Women's Suffrage.

Population will start contributing to pollution.

Invention


Iron Working


Labor Union


Literacy

* Allows Great Library.

Magnetism


Map Making

* Allows Lighthouse.

Masonry

* Allows City Walls.
* Allows Palace.
* Allows Great Wall.
* Allows Pyramids.

Mass Production

* Allows Mass Transit.

Increases the population's contribution to pollution.

Mathematics


Medicine

* Allows Shakespeare's Theater.

Eliminates the risk of population loss from plague in all your cities.

Metallurgy


Monarchy

* Allows Monarchy.

Mysticism

* Allows Oracle.

Improves the effect of Temples.

Navigation

* Allows Magellan's Expedition.

Nuclear Fission

* Allows Manhattan Project.

Nuclear Power

* Allows Nuclear Plant (with Factory).

Philosophy


Physics


Plastics

* Allows Space Component.

Increases the population's contribution to pollution.

Pottery

* Allows Granary.
* Allows Hanging Gardens.

Railroad

* Allows Darwin's Voyage.
* Allows Railroad (with Road, "Settlers" units, and Land terrain but no City center).

Allows Settlers to upgrade roads to railroads.

Decreases one-time revenue from new trade routes.

Recycling

* Allows Recycling Center.

Refining

* Allows Power Plant (with Factory).

Religion

* Allows Cathedral.
* Allows J.S. Bach's Cathedral.
* Allows Michelangelo's Chapel.

Robotics

* Allows Mfg. Plant (with Factory).
* Allows Space Module.

Rocketry


Space Flight

* Allows Space Structural.
* Allows Apollo Program.

Steam Engine


Steel


Superconductors

* Allows SDI Defense.

The Corporation


The Republic

* Allows Republic.

The Wheel


Theory of Gravity

* Allows Isaac Newton's College.

Trade


University

* Allows University (with Library).

Writing

* Allows Library.