Final answer:
Winston Churchill used the term "iron curtain" to describe the division between Western Europe and Communist Eastern Europe.
Step-by-step explanation:
Winston Churchill famously used the term "iron curtain" to describe the division that had fallen from Stettin in the Baltic to Trieste in the Adriatic. In his influential speech in Fulton, Missouri, on March 5, 1946, Churchill highlighted the ideological divide cutting Europe into two: a democratic West and a Communist East dominated by the Soviet Union. This impactful phrase symbolized the beginning of the Cold War era, a period of geopolitical tension between the United States and its allies, and the Soviet Union and its satellite states.