What to do with non-faction buildings?

[a completely inoffensive name]

I occupied Taras and all 12 of the buildings/structures have tags saying indicating "Western Greek", but only one of them actually had the "Used by:" description. That was a buidling that made military units so I destroyed it.

As far as the remaining 11 buildings/structures, is there any good reason to perhaps destroy any of them them and replace them with Roman equivalents? Is it that you can't "upgrade" foreign buildings and that is why you might want to consider demolishing a building and building your own factional version of it?

For example, there is a building there called Nomos Stratiotikos Kathektos (Epeirote Military Controlled Territory) II. It affects tax income, troop morale, public order and population growth.

Is it possible to leave this building and build a Roman version of it so that you get additional bonuses from having two factional versions of the same building?

I need to understand how this all works and how the "government" side of things works when you conquer a province.

Cheers

Bull

For how the governments work read the FAQ. You need to destroy the enemy government though, because if you try to build your own while the other is still there, or you try to repair the enemy government, the games crashes to desktop.