http://t.answers.com/answers/#!/entry/why-did-the-sinking-of-the-uss-maine-lead-to,5164bef287443d6c8e4a3fd1/2
The blaming of the Spanish started the Spanish America war. The Maine blew up on Spain's waters so they claimed they had no part in the explosion. But the Americans had their suspicions. Something actually happened in the boiler on the ship which made it blow up.