Final answer:
Roosevelt claims that U.S. involvement in World War I is necessary to defend democratic principles and national interests.
Step-by-step explanation:
Roosevelt believes that the U.S. should be involved in World War I to uphold democratic principles and protect the nation's interests. He argues that it is essential for the U.S. to fight against autocratic powers and maintain international peace. This claim is supported by his belief in the importance of protecting human rights and the spread of democratic values.
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