Question

to what does the term \iron curtain\ refer?
a) the nickname given by winston churchill to the line separating soviet-dominated europe from capitalist europe
b) the nickname given by soviet military officers to their blockade established around berlin in 1948
c) the code name for the naval blockade of cuba during the cuban missile crisis of 1962
d) the nickname given by soviet officials to the new extended frontier against western aggression in central europe

Explanation:

The "Iron Curtain" was a term coined by Winston Churchill to describe the political and ideological boundary separating Soviet - dominated (Eastern) Europe from capitalist (Western) Europe after World War II. Option b is about the Berlin Blockade (1948), option c is about the Cuban Missile Crisis (1962), and option d misinterprets the concept. Only option a correctly relates to the "Iron Curtain".

Answer:

a) the nickname given by Winston Churchill to the line separating Soviet - dominated Europe from capitalist Europe