FIrst thing in every province build a fort, then a town wathc, so u can at least protect your new province. Farms are very important to a healthy economy, as are merchants. Pretty much whatever province yo uare, u want to control the seas. If u have at least one ship in each sea province i na n area, you can move troops ver quickly. Howver, if you attack a province by sea, make sure you build a dock, so u can move troops from there. Using naval attacks, u can attack nearly all of some factions provinces, in the same turn, stretching them to breaking point.