List of top Political Science Questions on India and the cold war

When did polarity end?

What was the main function of the Warsaw Pact?

Match List I with List II

LIST I	LIST II
A. The Russian Revolution	III. 1917
B. The Fall of Berlin Wall	I. 1989
C. Soviet invasion of Afghanistan	IV. 1979
D. The disintegration of the Soviet Union	II. 1993

Name the wall, which had been built at the height of the cold war and was its greatest symbol, was toppled by the people in 1989?