Trying to unite Sweden... constant assfuck by Norway. What I do wrong :(.
How to beat Norway as Sweden:
1) swift naval attack
2) march troops from the SE tip of Norway and head north, bypassing the fortress at Fredriksten
3) pincer attack the Norwegian army, they might win some skirmishes but defeat is inevitable
4) negotiate their surrender, don't play hardball - allow some concessions
5) Norway is now a vassal state
6) be on the lookout for King Oscar II