Board Thread:General Discussion/@comment-25112275-20141113133156/@comment-7971816-20141115121616

The language issue was adressed by Jason (and in my english language course - I'm European by the way) ; English is the dominant language. Out of the 12 stations, the American one was MOST LIKELY the dominant one. Their language thrived. I'm sure some dialects were still in tact in the first generations. But when a child is born in an only-english environment, it will not have a thick accent. Accents fade out over generations if you live on the Ark. That's why a neutral English is spoken in the generations we meet in the show.

NOTE : 2 main characters on the show are portrayed by Australians. They do an AMAZING job at speaking with an American accent :p

As for the grounders, they have accents. The grounder language (f.e. Skai Krew (Sky Crew)) is a dialect of English. The only reason we have seen grounders speak neutral english, is when in contact with Arkers. This is the exact same thing as say a french person would speak to an american ; because American/English is the global language, most people (specialy europeans, if I may add in a certain pride) speak English pretty fluently. Which is probably the same effect you see on the show.