Civ2 epoch transition

Does anyone know what triggers the transition/progress from one epoch to the next?

Epoch = historical period
; 0 = Ancient
; 1 = Renaissance
; 2 = Industrial Revolution
; 3 = Modern

I believe renaissance is triggered by philosophy+invention advances but I'll have to test this further.

 

Is this what you were looking for?

https://sleague.civfanatics.com/index.php?title=Fantastic_Worlds_Advance_Slot_Properties

For example,

Industrialization:

Changes city picture to industrial (5th row in cities.bmp) in any non-fantasy game.
Changes the look of people to industrial (3th row in people.bmp).

Changes the types of land-based random Barbarians units produced.

Increases population based pollution.

Upon discovery the Industrialization advance oil appears as a supplied trade commodity in most cities.

Invention:

Reduces by 50% the amount of gold and science produced by caravan delivery. This modifier is NOT cumulative with Navigation or the Turn 200 effect, but is cumulative with the reductions of Railroad and Flight.

Free advances can no longer be gained from goody huts.

Invention works with Philosophy to change the citizen look to the renaissance style (2nd row in the people.bmp file).

 

This is exactly it. Thanks!