About 1,300,000 American troops served in combat during World War I. The correct option among all the options that are given in the question is the last option or option "d". The World War happened between the period of 28th of July 1914 and 11th of November in the year 1918. I hope it helps you.
The US had sent 1300 000
of its man to fight against the German Empire during the World War I to fight
alongside the Allied Powers namely Britain and France. The Allied Powers and
the US were able to win against the German Empire.
