Final answer:
Reagan alludes to Kennedy's 'Ich bin ein Berliner' speech as a symbol of unity and solidarity in his own speech at the Berlin Wall.
Explanation:
President Reagan referenced John F. Kennedy's speech in Berlin in 1963 when he said, 'Ich bin ein Berliner.' This phrase means 'I am a Berliner' and symbolizes unity and solidarity with the people of Berlin against oppressive forces during the Cold War.
Learn more about Cold War history here:
https://brainly.com/question/15761565
