How did Stalin scare Eastern Europe citizens into complying during the spread of communism

The correct answer to this open question is the following.

Although there are no options included, we can say the following.

Soviet Supreme leader Joseph Stalin scared Eastern European citizens into complying during the spread of communism in that the Soviet leader sent Soviet troops to these countries and maintained the military presence and threat during the following years after World War II.

Stalin wanted to create a buffer zone in case the Western European countries tried to invade the Soviet Union. That is how Stalin spread Communism in countries such as Poland, East Germany, Hungria, Rumani, Albania, and Czechoslovakia.

the urdan working class

frederick william of brandenburg-prussia trained his son, frederick, to be a hardy soldier. but frederick disliked rifle shooting and horseback riding. unlike his father, he was interested in french literature. he enjoyed poetry and music and, like some others of the enlightenment, he scoffed at religion. his father thought him soft, frivolous and unmindful of his duties. and when frederick refused to put his signature on a right to succession, for a few moments his father strangled him.