Final answer:
The iron curtain was the term used to describe the dividing line between Europe's liberal democracies and its communist states after World War II.
Step-by-step explanation:
The correct term that describes the dividing line between Europe's liberal democracies and its communist states following World War II is The iron curtain. The phrase was coined by British Prime Minister Winston Churchill in a speech he gave in 1946 to describe the division of Europe into two ideologically opposed blocs.
The iron curtain became a symbolic representation of the physical and ideological barrier that separated Western Europe, with its democratic governments, from Eastern Europe, which was under Soviet control. It represented the Cold War divide between the capitalist West and the communist East.
During the Cold War, the iron curtain served as a strong line of demarcation, both physically and politically, between the two spheres of influence. It marked the beginning of the Soviet Union's dominance over Eastern Europe and the formation of the Eastern bloc, which consisted of countries under direct or indirect control of the Soviet Union.
Learn more about The iron curtain in Europe after World War II