Which of the following events most signified the end of Soviet power in Europe?

A. Prague Spring

B. fall of the Berlin Wall

The correct answer is B. fall of the Berlin Wall

The Prague Spring happened in the 60s, thirty years before the Soviet Union would actually fall. The fall of the Berlin wall showed that other countries can separate themselves from the Soviet's grasp and this led other countries, even those that were in the Union such as Lithuania to start fighting for their independence.

The correct answer is B.