Final answer:
Winston Churchill coined the term 'Iron Curtain' to describe the division in Europe, where Eastern countries fell under Soviet control and were forced into Communist governance, separate from the democracies of the West.
Step-by-step explanation:
Winston Churchill described the countries under the control of the Communist Soviet Union as being behind an 'Iron Curtain'. In his famous speech on March 5, 1946, Churchill declared that from Stettin in the Baltic to Trieste in the Adriatic, an iron curtain had descended across the Continent. This effectively meant that the Eastern European nations were not at liberty to manage their own affairs, being under the totalitarian influence of the Soviet Union, which imposed Communist parties and policies upon them. The use of the phrase 'Iron Curtain' was to communicate the division and the growing barrier between the democratic governments of Western Europe and the Communist-controlled countries of Eastern Europe, leading to what became known as the Cold War era.