How do Americans now have an American accent if mostly all of them originated from Europe? | AskHistorians Archive Observer

How do Americans now have an American accent if mostly all of them originated from Europe?

by _BigmacIII

triviacrackhistorian

Because English people used to sound more like Americans! It's fascinating: http://mentalfloss.com/article/29761/when-did-americans-lose-their-british-accents