Final answer:
According to President Wilson, the United States entered the war to protect itself from invasion.
Step-by-step explanation:
According to President Woodrow Wilson in this quotation, the United States finally entered the war because it needed to participate to protect itself from invasion. Wilson states that the U.S. only enters the war when it is clearly forced into it and when there are no other means of defending its rights. This suggests that the U.S. entered the war primarily for self-defense, as it felt threatened and saw no other options to protect its rights.
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