History of Growth

== Building efficiency changes ==
Prior to building efficiency other systems were used with broad effects:
utilization
Happiness
== building changes ==
Homes previously had a percentage based peasant growth effect. this was initially changed to a large flat rate effect, whicg significantly changed peasant control strategies in war and was later reduced to a smaller effect. 
==Retired Buildings==
*Shipyards: 1.5% chance of creating a boat, holds 5 boats per shipyard. 1 boat was needed per 100 troops sent to attack someone on another island.
*Taverns: Lowered Draft costs and Mercenary costs.
*Plazas: Employed extra Peasants.
*Strongholds: Increased OME (now Training Grounds).
* Mines: Produced a certain number of gold per acre.
*Schools: Increase production of Science Books.
* Laboratories: Increase scientist spawn rate.