Final answer:
The message in this excerpt is that the United States is prepared to protect freedom.
Step-by-step explanation:
In this excerpt from John F. Kennedy's inaugural address, the message conveyed is that the United States is prepared to protect freedom. Kennedy discusses the common enemies of man, such as tyranny, poverty, disease, and war, and proposes the idea of forging a grand and global alliance to overcome these challenges. He calls upon the American citizens to join in this historic effort.
Learn more about United States protecting freedom