contestada

Besides the discovery of the Zimmerman telegram encouraging Mexico to declare war on the United States, what other reason is given for the United States joining World War I?

Respuesta :

Unrestricted submarine access 

The US decided to abandon their neutral position in WWI and to declare war to Germany in 1917 due to the unrestricted submarine warfare performed by Germany against any vessel that came close to British waters, including US ones. This beligerent attitude behind the attacks, plus the offer made by Germany to Mexico through the Zimmerman telegram (to help Mexico regain the territories lost in favor of the US during the Mexican American war), gave no choice to president Wilson but to enter in the war, even after his great efforts to remain neutral.