共产主义的垮台重塑了全球政治。

The ___fall of communism reshaped global politics.

在旧制度垮台后，一切都迅速改变了。

After the ___fall of the previous system, everything changed rapidly.

独裁者的迅速垮台导致街头庆祝。

The rapid ___fall of the dictator led to celebrations in the streets.