Well. It comes from a time before modern transport. Norway, as you know, has a shit ton of mountains and fjords. Theese mountains and fjords is what kept all the norwegian cities, villages and smaller towns apart. A lot of dialects have been influenced by visitors from other countries. Such as Denmark, Sweden and Germany. because of the distance between cities and towns, the language was shaped differently within all theese places. It was difficult for people to travel from place to place, so the way they spoke where you lived, would be the way you spoke yourself. People could have completely different dialects on either side of a fjord. Now, that modern transport exists, and a lot of people move in to the cities, a lot of dialects have died. (#prayfordialects). But still there are a lot of different dialects. Dialects in Norway is something a lot of norwegians care about, but for the sake of this post, I’ll save that part for later.