During the summer of 1914, the tensions in Europe that had been growing for many years culminated with the assassination of Austrian Archduke Franz Ferdinand by a Serbian terrorist organization. Within less than a month, two coalitions emerged—the Central Powers and the Allied Powers. As war raged in Europe, President Woodrow Wilson argued that the United States should remain neutral in this conflict.  But that neutrality was short-lived, after a series of events tested the President and a nation. How far can the United States be pushed, before it pushes back?