Final answer:
Woodrow Wilson, the 28th President of the United States, persuaded Congress to declare war on Germany in 1917 to "make the world safe for democracy."
Step-by-step explanation:
Woodrow Wilson, the 28th President of the United States, persuaded Congress to declare war on Germany in 1917 to "make the world safe for democracy." Wilson believed that a German victory in World War I would threaten the balance of power in Europe and the ideals of democracy. He delivered his Fourteen Points speech and advocated for the creation of the League of Nations to ensure peace and security.