Interesting piece of research. Dialect Map of American English. It lays out what we have all known for awhile. That folks in other parts of the country aren*t speaking exactly the same language as you. But they take it a step further by outlining the influences on English in various parts of the country.
Three things are needed for a new dialect to develop: a group of people living in close proximity to each other; this group living in isolation (either geographically or socially) from other groups; and the passage of time. Given enough time, a dialect may evolve to the point that it becomes a different language from the one it started as. English began existence as a Germanic dialect called Anglo Saxon that was brought to England by invaders from Germany. The Anglo Saxon peoples in England were now geographically isolated from their cousins in Germany which allowed the dialects to evolve in different directions. Other invaders would also influence the development of English with their languages until the modern English we speak today has become so different from the modern German spoken in Germany that a speaker of one cannot understand a speaker of the other. Thus English and German are considered to be two different, though related, languages. The other modern languages in this family are Dutch, Swedish, Danish, Norwegian, and Icelandic.


