Answer :

Gibbs
1. Repressive conditions used by the Spanish against the Cubans in the Cuban's fight for independence which helped to draw support of Americans. 
2. "Yellow journalism" which helped to exaggerate the situation and garner more support for war. 
3. The mysterious sinking of the USS Maine in the Havana Harbor. 
4. Losses to American investments in Cuba as a result of the Cuban Revolution. 
the causes of the Spanish American war was-
1. American imperialism, in large part fueled by the major newspapers of the day
2. When the battleship U.S.S. Maine exploded and sank in Havana harbor, this was the last push needed to force the country into this war.