Answer:
USS Maine
Explanation:
The USS Main was said to be blown up by the Spanish at Port Havana in Cuba, a Spanish controlled territory. The Spanish being responsible is disputed by historians. As a result of this war Cuba was now free from Spanish rule. Please note that no evidence has ever emerged that Spain did blow up the USS Maine, rather it was used as a Casus Belli to declare war on Spain and protect U.S interests in Cuba.
