Invasion from the inside

[Omanes Alexandrapolites]

Hullo rockoutloud1213,
If your empire's general's loyalty is terribly low, then you could, in addition to the advise provided by Brandy Blue, train some spies and keep them in the disloyal regions. They should help prevent dissent out of fear of been caught.

Alternatively, you could place a Grand Inquisitor in the province to force the local into loyalty out of fear of him. It also removes religious unrest as he preaches to the populace.

Hope this helps you, good luck, cheers!