shenryyr
serval
The problem side of the equation seems mostly to be income though, which suggests it might not be building income providing buildings, or maintenance reducing ones enough (I can't really tell very easily from the logs)
the main thing they were building was units. units, units, units. I don't know a better way to explain it. the income was severely negative, causing unit strikes and mass disbanding... so they produced replacement units, which again caused the economy to implode and those units to disband. so they produced replacement units again and again, ad nauseam.
I never checked in the cities to see what was constructed... will do so on this current automated campaign. here's a few savefiles from the brazil one. http://www.filedropper.com/single