The destruction of the Berlin Wall and the breakup of the Soviet Union signify the:

AEnd of the Cold War
BCollapse of the Taliban
CStrength of the Warsaw Pact
DPower of the European Union

Verified Answer :

The Berlin Wall: The Fall of the Wall. On November 9, 1989, as the Cold War began to thaw across Eastern Europe, the spokesman for East Berlin's Communist Party announced a change in his city's relations with the West. Starting at midnight that day, he said, citizens of the GDR were free to cross the country's borders.

A end of the cold war is the correct answer because the wall was a symbol of communist control. after the wall was torn down it was a huge victory for democracy. Hope this helps :)