33. Which of the following statements would most logically follow the last sentence of the passage?
(A) People not fighting directly in the war were, for the first time, able to comprehend the reality of the war.
(B) The railroad technology developed during this time led eventually to the expansion of the West.
(C) The new technology, especially submarines, gave the North an advantage in the war that the less industrialized South did not possess.
(D) The photographs proved that the Civil War was the bloodiest war ever fought on American soil.