Answer :
Final answer:
Kennedy's message highlights American citizens' history of protecting democracy through a unified effort against common global enemies.
Explanation:
The best explanation of Kennedy's message in the excerpt is that American citizens have a history of protecting democracy. Kennedy's inaugural address emphasizes the need for a unified effort to combat common enemies such as tyranny, poverty, disease, and war, highlighting the importance of a global alliance.
Learn more about Kennedy's inaugural address here:
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