On 15 February, the U.S. battleship Maine blew up in Havana harbour. 260 people were killed. The event helped crystallize American discontent with Spain in Cuba. The Spanish-American soon followed.
Richert, Lucas Paul. "USS Maine Destroyed". The Literary Encyclopedia. First published 01 February 2009
[http://www.litencyc.com/php/stopics.php?rec=true&UID=5992, accessed 30 May 2015.]