What actions did stalin take to spread communism between 1945 and 1949?

Some major Stalin´s actions in 1945-49 were:

- Soviet armies sent to liberate Eastern Europe from the Nazis in WWII stayed and occupied those countries, turning into a factor of political control and pressure;

- the Berlin blockade of 1948;

- controlled elections to put communist candidates in office in Czechoslovakia and other nations;

- active support for communist armies in China, a major factor in their victory in 1949.

Explanation:

answer; andrew jackson approved nullification by signing it into law,and john calhoun opposed it saying it was unconstitutional;

a.) it weakened the power of the catholic church in europe.