Which best explains how the outcome of the Spanish-American War of 1898 marked a major change for the United States?
A. The war was the first American conflict to be ignited by yellow journalism.
B. America had never defended itself against a major military power before.
C. American victory in the war on several fronts placed the United States in a position of world leadership for the first time.
D. America won the war in less than three months.​