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:

i think its either b or c

explanation:

according to my research (britannica and quizlet) the first settlements were along the huang river because it could give the crops more fertile soil that really it out. this was due to the yellow slit caused by floods of the river.