So, my Attila single player game I had to scrap. I had started getting more warlike, with the assumption I would have some oil in my lands. But when I got the technology to see oil, I have no oil. I have a lot of coal, but no oil. My whole strategy was to turn my horsemen into tanks, but without oil, that won't work.

But something I want to ask is, revolutions. I had Autocracy Ideology and was the first one to pick it. But then all of a sudden, in a few turns I went from 10+ happiness to -39 unhappiness and needed to revolution change to Order to get my people happy again. How does this happen and how do I prevent it from happening?