How and why did President Wilson lead the United States into World War 1?

1. Circumstances that caused Wilson to change his mind and enter WW1: · Zimmerman Telegram - Germany sent to Mexico. Britain intercepted it and gave it to US Pres. Wilson. Germany planned to start unrestricted Submarine warfare on US and invited Mexico to join. (Germany was planning on breaking the Sussex pledge). · British influence in the US - Americans wanted to enter on the side of the Allies because the Germans and countries on the other side of the Allies were attacking us. · Submarine warfare and freedom of the seas - Germany was planning on starting submarine warfare on US and trying to control the seas. Then US wouldn't have any freedom and wouldn't be able to trade.