at challenges did the U.S. military have to overcome in the Spanish-American War? What accounted for e nation's eventual victory? Select the two best answers, a. Americans were largely sympathetic to the Cuban rebels' cause, especially as the Spanish response was notably brutal. b. Eventually, American naval strength, combined with the proximity of American supplies relative to the distance Spanish forces traveled, made the decisive difference. In a war upon the sea, the U.S. Navy proved superior in both the Philippines and the blockade of Cuba. c. The Spanish-American War posed a series of challenges to the United States' military capacities. The new U.S. Navy, while impressive, was still untested, and no one was certain how the new ships would perform. Further, the country had a limited army, with fewer than thirty thousand soldier and sailors. While over one million men ultimately volunteered for service, they were untrained, and the army was ill-prepared to house, arm, and feed them all.