I am pretty sure the answer is A. Hope this helps
Explanation:
U.S. victory in the war produced a peace treaty that compelled the Spanish to relinquish claims on Cuba, and to cede sovereignty over Guam, Puerto Rico, and the Philippines to the United States. ... The United States also annexed the independent state of Hawaii during the conflict.
Russia's defeat of France was the turning point in the Napoleonic Wars because it shook the reputation of Napoleon and weakened the hegemony of French in Europe. This war showed that Napoleon could be defeated and was not invincible. The strength of the french army under Napoleon decreased by a huge margin.