The evidence that Reagan gives that the Soviet Union may be becoming freer was the demolition of the Berlin Wall.
What is a Political Speech?
This refers to the talk made by a political leader or representative that is meant to cause a change in a place, either domestic or foreign.
Hence, we can see that after President Reagan's speech to the Soviet students about their freedom, the Berlin wall started to be demolished on 9th November 1989, 2 years after his speech.
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