The bizarre thing I had with revolutions was this one time as the United States where I was playing "pacifist," i.e. I didn't do Manifest Destiny and only fought the CSA. Naturally I disbanded my army, but bizarrely this made revolts ridiculously frequent, as if everyone in the country was just raring to install a dictator in the White House and was only held back by the U.S. Army.
There was also the time I played a Russia game where I didn't reform or barely reformed into the 20th century...because there wasn't any support for reform, since I was running the country so well and beating up everybody. I shattered Prussia, destroyed the Ottomans and Austria, and had a massive sphere of influence and puppets extending over most of Eastern and Central Europe...fun times...anyway, I didn't suffer any serious revolts that I can recall until the 1920s or something like that...
There was also the time I played a Russia game where I didn't reform or barely reformed into the 20th century...because there wasn't any support for reform, since I was running the country so well and beating up everybody. I shattered Prussia, destroyed the Ottomans and Austria, and had a massive sphere of influence and puppets extending over most of Eastern and Central Europe...fun times...anyway, I didn't suffer any serious revolts that I can recall until the 1920s or something like that...