Question

in what way did the soviet union try to spread communism around the world?
by introducing social democracy
by creating buffer zones
by supporting revolutionary movements
by infiltrating foreign governments

Explanation:

During the Cold War, the Soviet Union supported revolutionary movements in various countries. These movements aimed to overthrow existing non - communist governments and establish communist or socialist regimes. Social democracy is a different political ideology (more reformist within a capitalist framework). Buffer zones were more about security (like Eastern European countries after WWII as a buffer against the West, not directly about spreading communism globally). Infiltrating foreign governments was not a major, overt way of spreading communism compared to supporting revolutionary movements.

Answer:

C. by supporting revolutionary movements