Opioid Class of Analgesics OCW: Introduction to Clinical Pain Problems (J. Haddox) Page - 6
They had their heads full of visions of conquest and glory. Looking back to WWI through the lens of 2007, it would appear to us a foregone conclusion that the US would eventually enter the war on the side of the Allies. However, that is not exactly the case.
History World War I. Although World War I began in 1914, the United States did not join the war until 1917. The impact of the United States joining the war was significant. The additional firepower, resources, and soldiers of the U.S. helped to tip the balance of the war in favor of the Allies.