Riots in Havana by pro-Spanish "Voluntarios" gave the United States a reason to send in the warship . It was sent to indicate high American interest. Tension among the American people was raised because of the explosion of the . "Yellow journalism" added to it accusing Spain of doing a lot of bad things. This made the American public opinion show increased support of the conflict. The war ended after decisive naval victories for the United States in the Philippines and Cuba.