Answer: the line dividing democratic and communist countries in Europe
Explanation: At a speech given by Winston Churchill in Fulton, Missouri, in 1946, Churchill said, "From Stettin in the Baltic to Trieste in the Adriatic an iron curtain has descended across the continent of Europe." After World War II, Eastern European countries were ruled by communist governments that were controlled by the Soviet Union. The Western European countries were non-communist, and most were democratic.