Let's see...
ND is a huge agricultural state and the fair reflects that - cattle, wheat and sunflowers (Dakota Kid Sunflower seeds!) are big crops. The also produce a lot of durum wheat that is made into pasta - hence a huge pasta festival.
Many Norwiegan influences and lots of native treats are popular.
At the state fair, the big entertainment are tractor pulls and the Combine Crunch - a demolition derby with old farm combines.
They take a lot of pride in the cooking/baking contests at the fair -lots of traditional farm fare and comfort food.
There is a large billboard when you enter ND from Montana that reads "Welcome to ND - Mountain removal project complete" and when you leave it reads "Stay in ND - Custer was healthy when he left".
I'll keep thinking at work and send anymore thoughts later!
Good luck!
Jill