Which of the following correctly characterizes the different post-war goals of the united states and the soviet union?

a. the united states wanted to promote democracy throughout the world, while the ussr wished to spread a single-party system.

b. the united states wished to stay out of the affairs of other nations, while the ussr wanted to become a superpower.

c. the united states wanted to create a buffer zone in eastern europe, while the ussr wished to stay out of its border nations.

d. the united states pushed for government control of the economy worldwide, while the ussr promoted the free-market system.