How does one reduce banditry (1.2.6 - Grand Campaign - Rome)?

[MeiguoJinjang]

How does one reduce banditry (1.2.6 - Grand Campaign - Rome)?

Thanks.

[Falco]

How does one reduce banditry (1.2.6 - Grand Campaign - Rome)?

Thanks.

Buildings, character skills, etc.

[Landtuber]

Patrolling armies (and fleets) in the region reduce banditry as well. Currently also doing a Grand Campaign as Rome and for trade hub areas (Northern Africa, Greece and Italia) I found I had no choice but to keep a few armies/navies patrolling at all times. Note that buildings that increase income almost always also increase banditry as well.

[valky]

a good building is the salt-thingie (agrar-chain), adds a little food, income and reduces the penalty & yellow food-building (capital), which I have in each province anyway.
And there are 2 tech-unlocks as well, possible even 3 depending on your faction.

^Tradehubs, as mentioned above, require more work.

[cachulfaian]

Sadly you can't have as many armies as provinces to fight banditry in each province. My humble advice would be to have armies in important provinces like Latium, Africa, Egypt, Syria, etc. If you get the "treasury stolen" event it can really up your economy for that turn and maybe cause you to get bankrupt.