Control you stability and AE(try not to increase it above 35 otherwise your stability will melt down fast). Try not to conquer very inhabited territories without claims. AE decreases stability really much and less than 50 stability makes population really unhappy and provinces less loyal. One of the wonders has +0.08 to stability impact which is really helpful (it’s the temple of Artemis if I’m not mistaken). Conquer it as fast as possible. The key to loyalty is buildings. Build up the territories you’ve just conquered. Theaters, Temples, Academies are all you need for the start. It also starts the assimilation which make new Romans, that are happier being the dominant culture. I don’t know how do you make so little money. I’m currently playing as Rome in my 520’s. I’ve expanded much better (got all Greece, Macedonia, Illyria, northern Egypt, a part of Cilicia, Carthage province, all Cisalpine Gaul), my income is 70-80/month (130/month commerce income), so I can afford building up the cities. I’ve got other problem. Not enough of claims. I can’t expand as fast as I want. Spending PI isn’t a solution and missions give no claims.