As of 1914, the US was neutral in terms of World War I. The US did not want to get involved in European affairs so they refused to help the allied or central powers. The US does not change their stance on this policy until 1917. The change in US foreign policy in 1917 was caused by the sinking of the Lusitania (1915) and the Zimmerman Telegram (1917). The US does not officially join World War I until April of 1917.
