On this day in 1909, Russian composer Sergei Rachmaninoff made the debut performance of his Piano Concerto No. 3. The piece is considered to be one of the most technically challenging piano concertos in the standard classical repertoire.
This day in 1943 saw the opening of the Tehran Conference during World War II. In the conference, US President Franklin D. Roosevelt, British Prime Minister Winston Churchill and Soviet Premier Joseph Stalin met to discuss war strategy.
And this day in 1989 witnessed the Velvet Revolution. In the face of protests, the Communist Party of Czechoslovakia announced it will give up its monopoly on political power.