Unit support costs and inflation

[playshogi]

Could someone please explain how unit support costs work?
When I go to the Financial Advisor screen there is a cost for units and another cost for military units. Please see the screenshot in this thread:

http://forums.civfanatics.com/showthread.php?t=133773

Also, how do you combat inflation? My inflation rate is up to 25% and climbing. Is there a civic I should be running to lower this? Currently, I'm at H. Rule, Vassalage, Slavery, and Org. Rel.

[Maniac]

WTF inflation in Civ?

[dearmad]

It's there- not controllable, seems like a cash offset for when you heat up your economy related to your nation size and city sizes. Not a big deal, though- I have taxes at 0 and am making plenty of money every turn through religion!

You ned to control your income sources to suit your technology and in the middle ages religion was a CASH COW, not TAXES.