William McKinley decided to send in the USS Maine to protect US sugar interests, and help the rebel cause in Cuba, however the ship blew up killing 260 crew members on board. What the Naval Court of Inquiry ruled was a mine, quickly became illustrated as a Spanish attack on the US. Although such claims cannot be proven, the public and congress jumped on board, blaming the Spanish for the incident which two months later marked the beginning of the Spanish-American War.
Despite the US’s concern in its sugar interest and its general imperialistic willingness to expand, the Spanish-American War quickly became a war based on morality. Many people saw a reflection of America’s own struggle with Britain within the Cuban willingness for freedom and saw it as a need to intervene. Spain’s blatant disregard for the Monroe Doctrine spurred a US self-entitlement to police over Southern America in case of such occurrences; this later became known as the Roosevelt