Hey Everyone,
Rebellions in Simcountry, are really just a soft cap function, to stop exploits and empire blobs taking over the whole planet.
There are two main causes for a rebellion.
1). Really high finance index, but really low service indexes. ie Healthcare, Education, Social Security, Transportation. This is to prevent players from hardly providing services to their people, while making huge amounts of cash, essentially it stops unrealistic cash farming.
The Role Playing / Lore explanation for this is, if you're the President of a country sitting on trillions in cash, while your people live in poverty, chances are, the people are going to be pretty mad about it and try to overthrow you.
2). You have to many countries. This is to prevent a single player from becoming unstoppable and taking over a whole world, leaving no room for other players.
There is however a way to combat this. The rebellion chance is based on both the number of countries you have, and your average welfare index for your empire. If you improve the welfare of your nations, you can keep your people happy enough to prevent rebellions. This is another form of soft cap, since each improvement is more expensive, so only successful players can maintain very large empires.
The Role Play / Lore explanation for this, is as an empire grows larger, it is harder to keep all the people content under a single governing structure. Nationalists try to break away, and regain their independence. Governments have to spend more to keep their people content, ultimately straining their limited resources. This is a large part of why no one has ever conquered the earth in real life. Empires collapse under their own weight, grow to big at your peril.
TL;DR, Increase your Welfare index to stop rebellions, the feature is working as intended and does it's job well.
Signed President of DanNation on LU