Where did southern accents in the US come from?

Question

Where did southern accents in the US come from?

In: 3138

Answer 1

(Not a linguist, so this is a half-remembered scrap from some documentary.)

There are different types of “southern accent”, but apparently from the various countries of origin of the settlers. Various UK, French, and German accents, slowed down and drawn, apparently become Southern drawls or Northern twangs, depending on how they’re reinforced by a closed group of people.