Why did the United States, so determined to stay out of the Great War in 1914, join the Allied cause enthusiastically in 1917? What do you think the outcome of the Great War would have been if the U.S. did not get involved?-History Essay paper February 20, 2018 pressays Question: Why did the United States, so determined to stay out of the Great War in 1914, join the Allied cause enthusiastically in 1917? What do you think the outcome of the Great War would have been if the U.S. did not get involved? Please follow and like us: