The only ground meat pie with a pastry crust that I'm aware of is tortiere... No pastry in Canada either, nor does that appeal. The only ground meat pie with a pastry crust that I'm aware of is tortiere, also delicious. Pot pies generally have something chunky and stewish inside (beef or chicken).
Germany never did. East Germany became communist in 1945 when the USSR ocupied it after WW II.
In 1933, with the support of the elites, Hitler became Chancellor of Germany and the Nazis gradually established a one-party state, under which Jews, political opponents and other undesirables elements were marginalized, with several millions eventually imprisoned and killed.