The correct answer is B, as at the conclusion of the Spanish-American war, the United States gained an empire and new stature in world affairs.
In fact, as a result of the defeat, Spain ceded its territories of the Philippines, Guam and Puerto Rico to the Americans. In this way the US obtained territories in strategic points of the world (Caribbean, Oceania and Southeast Asia), with which its power in front of the rest of the nations was increased.
In addition, the fact of having defeated a colonial power gave the United States a new status as a world power, both politically and militarily.
