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.
East Germany's new leader, Egon Krenz, called for free democratic elections. But it was not enough to turn the tide and once the Berlin Wall was breached, East Germany disintegrated. On 3 October 1990 the two Germanys merged to form a new united country.