World War I was immediately precipitated by the assassination of Archduke Francis Ferdinand by a Serbian nationalist in June 28, 1914. This war happened in Europe against the world’s great power. On one side were the Allies (France, Russia, Britain and United States). On the other side were the Central Pawers (Germany, Austria-Hungary, and Turkey). At he beginning of the war, U.S. President Woodrow Wilson declared neutrality (August 04, 1914) claiming that we were not military prepared