Playing Vanilla: As Aztec Democracy, standard-size map, already retired Persia & Zulu, playing against Iroquois, Babylon, America (same continent); and England & Germany (other side of the world). (There's also 1 island shared by several.) I have around 538 Infantry, 79 Tanks, 43 Cavalry, 21 Artillery (I just use these for defense, I don't cart them around anywhere), not to mention naval units. My unit costs are 711, which is now dragging down scientific development because my income is only 1175. (I'm not too worried about maintenance and corruption; should I?) Am I doing something wrong? Should I just go out and conquer (at least, on my continent), MPPs be damned? The units are (except for a few) stationed in cities; does that make a difference?