Which of the following accurately summarizes the involvement of the United States in World War I?
A. Initially, the U.S. was politically neutral and was involved only economically; however, once the U.S. entered the war its military involvement helped force an armistice.
B. The U.S. was involved economically, which provided critical resources for Allied forces and Central powers that forced a German armistice.
C. The U.S. joined the Allied forces in 1914, but did not send troops until 1917, which eventually forced Germany to surrender.
D. Initially, the U.S. was politically neutral and completely uninvolved; however, once it joined the Central powers they helped force Germany to surrender.