When did the Iron Curtain fall?

According to the Encyclopædia Britannica, the Iron Curtain ceased to exist between 1989 and 1990. The fall of the Iron Curtain is linked closely to the collapse of the Berlin Wall.

The Iron Curtain was an ideological and political barrier erected by the Soviet Union after World War II. This was done to shut the Soviet Union off from the rest of the world to set itself apart from non-communist societies. The term "Iron Curtain" was brought into prominence by British Prime Minister Winston Churchill during a speech in Fulton, Missouri on March 5, 1946, during a discussion of the communist states of Europe.