Officially in Germany, Austria and Switzerland. Netherland has a own language. Also Austria and Switzerland have an accent which differs from german.
Hitler spoke the German language.GermanHitler spoke German.
Gutenberg spoke German.
he spoke German
Swiss German
Felix Mendelssohn was German, so he spoke German.
Johannes Gutenberg was born and raised in the German city of Mainz. He spoke German.
Gregor Mendel spoke German as his native language.
Not exactly sure how German she was, but she was mostly German. Her father was mostly German with a little bit of French, Welsh, Danish and Scottish mixed in (thanks to the Plantagenet, Tudor, and Stuart Kings and Queens) Her mother was a German Princess and was almost entirely German.
He spoke a little tiny bit of Hungarian. He mainly spoke German and French.
They spoke Austrian German
Albrecht Durer spoke German. He was a famous German painter, printmaker, and theorist of the German Renaissance.
He spoke German, albeit with a bit of an Austrian accent.