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 ?

The Berlin wall

The correct answer is option (3) - The Berlin wall

The Berlin Wall symbolised the division between the capitalist and the communist world. Built in 1961 (construction also started in 1961) to separate East Berlin from West Berlin, this more than 150-kilometre-long wall stood for 28 years and was finally broken by the people on 9 November 1989. This event symbolized the end of the division between East and West Germany and marked the beginning of the reunification of Germany. It was a significant development in the end of the Cold War.