The fall of the Berlin Wall symbolises which of the following events in International Politics?

The correct options are Unification of Germany and Collapse of the Second World.

To understand why these options are correct, we can analyze the historical context and the symbolic importance of the Berlin Wall:
1. Unification of Germany: Built in 1961, the Berlin Wall physically and ideologically divided East Germany (communist) and West Germany (democratic/capitalist). Its fall on November 9, 1989, paved the way for the official reunification of Germany, which took place on October 3, 1990. Thus, it directly symbolizes the unification of Germany.
2. Collapse of the Second World: The term "Second World" historically referred to the socialist/communist bloc led by the Soviet Union. The fall of the Berlin Wall was a pivotal catalyst that accelerated the collapse of communist regimes across Eastern Europe and eventually led to the dissolution of the Soviet Union in 1991, marking the end of the Second World bloc.