Final answer:
The main reason why evidence of Soviet infiltration can be considered the main reason is because it challenges Cold War perceptions regarding the Soviet Union.
Step-by-step explanation:
The main reason why evidence of Soviet infiltration can be considered the main reason is because it challenges Cold War perceptions regarding the Soviet Union. Previously, the Soviet Union was seen as aggressively pursuing dominance, but recent scholarship based on declassified documents reveals that the nation was primarily driven by concerns for its own security and stability.
These documents also confirm that the Soviet Union committed massive human rights violations and showed contempt for democracy and free discussion. However, they also demonstrate that Eastern European leaders and people had agency in shaping the histories of their nations, challenging the assumption that all decisions flowed from the Kremlin.
Ultimately, the evidence of Soviet infiltration showcases the complex dynamics of the time period and the impact of the Soviet Union's actions on its own decline and the fall of Communism.