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.
The list below gives the Chancellors of West Germany; the government of East Germany was headed by the Chairman of the Council of Ministers. In 1990, East Germany was dissolved (see German reunification) and merged with West Germany, which retained the name of the Federal Republic of Germany.