Answer:
C) the United States
Step-by-step explanation:
The World War I which began on 28 Jul 1914 and ended on 11 Nov 1918 saw the Austro-Hungarian heir Archduke Franz Ferdinand assassinated by the Serbian which led to global war.
After the First World War, world political power shifted from Europe to the United States as it become stronger militarily and economically, as a result of the Soviet Union collapse.