Final answer:
The message in this excerpt is that the United States is prepared to protect freedom and believes in forging a global alliance against common enemies.
Step-by-step explanation:
In this excerpt from John F. Kennedy's inaugural address, the message is about the United States being prepared to protect freedom. Kennedy refers to a 'long twilight struggle' against common enemies such as tyranny, poverty, disease, and war. He also speaks of forging a global alliance to ensure a better life for all mankind. The excerpt shows Kennedy's willingness to defend freedom and his belief in the importance of unity and cooperation.
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