What changed wardrobe Wilson's opinion about entering World War 1?

Woodrow Wilson's opinion about entering World War I shifted due to a combination of factors, including the unrestricted submarine warfare by Germany, which threatened American lives and commerce, and the interception of the Zimmermann Telegram, in which Germany sought a military alliance with Mexico against the United States. These provocations heightened public sentiment in favor of intervention and underscored the need to protect American interests. Ultimately, Wilson believed that joining the war was essential to safeguard democracy and promote a lasting peace, leading him to ask Congress for a declaration of war in April 1917.