The correct answer to this open question is the following.
The fall of the Berlin wall might have impacted the relationship between the Soviet Union and the United States in that this event represented the culmination of tense and conflictive relationships during the Cold War years in which both nations competed in the arms race, meanwhile the Soviet Union tried to spread Communism in many places and the United States tried to stop it through the foreign policy of containment. USSR leader Mikail Gorbachev and his policies of Perestroika and Glasnost really helped to facilitate this process.
<span>The economic and social crises chipped away at the foundations of Medieval society in the 1300s and 1400s. Wars raged constantly during this time. The conditions were ripe for great social changes.</span>
The answer to this would be B- Longitudinal Study.
