1) this may represent what would be the outer fringes of Carthages possible expansion area and so may not become as "Carthagised", Anyway, lvl 3 and 4 governments aren't so bad (particurlarly lvl 4) at all

2) Before you build an MIC you should chek what units it can recruit by right clicking on the building, sometimes they don't build anything, if the building says it will recruit a unit but doesn't when you build it you probably have a glitch which I cannot help you with.