The document provides background on US entry into WWI. It discusses how the US initially desired neutrality but Germany's unrestricted submarine warfare, such as the sinking of the Lusitania which killed 128 Americans, and the intercepted Zimmerman Telegram offering Germany's support for a Mexican attack on the US, led President Wilson to declare war on Germany in April 1917. Perspectives from a grieving widow, a German U-boat commander, German diplomat Arthur Zimmerman, and President Wilson provide various viewpoints on US entry into the war.