I feel relatively comfortable with the new aspects of CivIV(still trying to break a few old habits from CivIII
), but I can't seem to wrap my head around controlling loss to my treasury without reducing research percentage. I know city specialists (priests, etc.)lower debt/turn, gold per turn diplomacy trades, but what else effects this positively? I have built cities with great commerce which seems to only effect research,trade routes again add to commerce which goes to research. Is there a ceiling on commerce generated in a city where it drains over into treasury?Any tips or fundamentals I am missing? Perhaps I should be looking for specific techs that might augment specialists?What might they be? Thanks to any help that comes. I feel this is the only thing holding me back from the next difficulty level.

