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 Number of Representatives shall not exceed one for every thirty Thousand, but each State shall have at Least one Representative
I will give my best shot. I think they justified their reason to conquer the Aztec and Inca Empires in the name of their religion, christianity
C. the great plains in the united states
