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.
Why Did China Become a Communist State? China became a communist state in 1949. Under the leadership of Chairman Mao, china was able to remove the nationalist party as the recognized government of China. After the final emperor was overthrown, China was divided into small states, each state was controlled by a warlord.