Yes, I live in a village near it, where PO boxes don't exist.

You didn’t understand or were in too few history classes, in 1841 Germany wasn’t a country yet. But the people in Prussia, Bayern and so on wanted a united German state. So above being Prussian, Bavarian, you were German. It was never meant as in „we are better then you“

You can. Linguists call it "Niederdeutsch" (the ISO 639 abbreviation for the language is "nds") or "Low German"; native speakers of those dialects generally call it "Plattdüütsch" or "Platt".

Watch the video before criticizing it, young man.

You should start watching the video

Did you watch the video before commenting on it?

You should now click „play“

The dialect local to Hannover is a version of Calenberger Platt: that it is considered to be the "place where the best High German is spoken" is so misleading it's practically a lie. The standardized dialect originated in Saxony in the 16th century, but is now spoken everywhere -- it's a standard. Also, as I explained very clearly in the video, there are two definitions of "High German" and you shouldn't confuse them. You're still thinking of "High German" as meaning "the standard dialect", but linguists use a different definition: it's all the dialects spoken south of the Benrath Line, of which the standardized dialect is only one. So Bavarians might say "zwoa" and "schloffa" and you might think that sounds very, very different from "zwei" and "schlafen". But what makes this High German is the consonants "z" and "f": they're there because of the High German consonant shift, a sound change that started in about the 6th century and only affected dialects in central and southern regions. Low German is unaffected by the shift: their words are "twee" and "slapen", more like Dutch than High German. And you should also understand the difference between dialect and pronunciation. Teachers in Swabia don't teach in the local dialect: they teach in the standardized dialect but maybe with an accent and perhaps a couple of regionalisms. They might slip into their local dialect when discussing matters among themselves, but the scathing looks will have come from the suggestion that their students can't write properly because their teachers don't talk like you do. In point of fact, it's actually very common for people to be essentially bilingual in their own language, able to code-switch instantly between the standard dialect and the local regiolect. It's not as if those teachers are quoting Hamlet as saying, "Sei odr net sei, des isch do d Frog."

By definition, they all do. Just not the _standardized_ High German dialect. As I explain in the video, there are two different definitions of "High German": don't get them confused.

Nope, not if we're talking about the native local dialects.