Units that give bonuses to cities

cfkane

Emperor
Joined
Feb 7, 2006
Messages
1,196
How would it be possible to program a unit that gave certain bonuses to a city when he is stationed in it? (e.g. a hero unit that, when in a city, creates extra happiness). I remember in Age of Ice one of the heroes increased the great person birthrate by being in a city. How was this done?
 
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